please help its due today and I need a good grade on it!!!!

Please Help Its Due Today And I Need A Good Grade On It!!!!

Answers

Answer 1

The equation of the parabola that models the cross section of the reflector is: y = (1/32)x².

To model a cross section of the reflector as a parabola that opens upward and has its vertex at the origin,

We can use the standard equation for a parabola in vertex form:

y = a(x - h)² + k

In this equation, (h, k) represents the coordinates of the vertex.

Since we want the vertex to be at the origin (0, 0), the equation becomes:

y = ax²

To determine the value of 'a,' we can use the given information that the bulb is located 8 inches from the vertex.

Since the bulb is located at the focus, we know that the distance from the vertex to the focus (f) is also 8 inches.

In a parabola, the distance from the vertex to the focus is given by the formula f = 1/(4a).

Plugging in the value of f (8) into the formula, we can solve for 'a':

8 = 1/(4a)

32a = 1

a = 1/32

Therefore, the equation of the parabola that models the cross section of the reflector is: y = (1/32)x²

Learn more about parabola click;
https://brainly.com/question/29267743

#SPJ1


Related Questions

Write the equation of the hyperbola

Answers

Using the center and distance between co-vertex and center, the equation of the hyperbola is written below

[tex]\frac{(y + 3)^2}{49} - \frac{(x - 10)^2}{144} = 1[/tex]

What is the equation of hyperbola

A hyperbola, in analytic geometry, is a conic section that is formed when a plane intersects a double right circular cone at an angle such that both halves of the cone are intersected.

The equation of hyperbola is given as;

[tex]\frac{(y - k)^2}{a^2} - \frac{(x - h)^2}{b^2} = 1[/tex]

where (h,k) is the center of the hyperbola, a is the distance between a vertex and the center, and b is the distance between a co-vertex and the center.

In this case, the center is (10,−3), a=7, and b=12. Therefore, the equation of the hyperbola is

The equation of the hyperbola is;

[tex]\frac{(y + 3)^2}{49} - \frac{(x - 10)^2}{144} = 1[/tex]

learn more on equation of hyperbola here;

https://brainly.com/question/15935373

#SPJ1

Find the equation of the line.
Use exact numbers.

Answers

Answer:

y = 3x + 3

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]

with (x₁, y₁ ) = (- 1, 0) and (x₂, y₂ ) = (0, 3) ← 2 points on the line

m = [tex]\frac{3-0}{0-(-1)}[/tex] = [tex]\frac{3}{0+1}[/tex] = [tex]\frac{3}{1}[/tex] = 3

the line crosses the y- axis at (0, 3 ) ⇒ c = 3

y = 3x + 3 ← equation of line

Solve for X
20x+30
28x-10

Answers

Answer:

[tex]\huge\boxed{\sf x = 5}[/tex]

Step-by-step explanation:

Statement:Corresponding angles are equal.Solution:

20x + 30 = 28x - 10 (Corresponding angles)

Add 10 to both sides

20x + 30 + 10 = 28x

20x + 40 = 28x

Subtract 20x from both sides

40 = 28x - 20x

40 = 8x

Divide both sides by 8

5 = x

OR

x = 5

[tex]\rule[225]{225}{2}[/tex]

I really need help doing this. please help me.

Answers

The bisector angle is angle PQT which is equal to angle RQT.

What is angle bisector?

Angle bisector or a bisector angle is a type of angle obtained after dividing the initial angle into two equal parts.

The bisected angle can be obtained using a pair of compass and a pencil attached to it.

To bisect the given angle RQP; we will take the following steps;

place the compass on exactly point Qexpand the radius of the compass such that the pencil attached to the compass will be in between R and P.strike an arc with the pencil clock wisestrike another arc with the pencil anti clock wise such that the two arc intersects.draw a line from point Q to intersect the two arcs.label the point of intersection of the two arcs Tangle PQT is equal to angle RQT

Learn more about bisector angles here: https://brainly.com/question/24334771

#SPJ1

p: 10 > 7 q: 10 > 5
p →q

F F → T
T F → F
F T → T
T T → T

Answers

Answer: if it's true that 10 > 7 (P), then it's also true that 10 > 5 (Q).

Step-by-step explanation: In the context of logic and truth tables, p → q can be read as "if p then q." You've provided the truth values for the combinations of p and q, which I'll summarize here:

If p and q are both False (F), then p → q is True (T).

If p is True (T) and q is False (F), then p → q is False (F).

If p is False (F) and q is True (T), then p → q is True (T).

If p and q are both True (T), then p → q is True (T).

Given your propositions:

P: 10 > 7

Q: 10 > 5

P is True because 10 is indeed greater than 7. Q is also True because 10 is greater than 5.

Therefore, we're in the fourth case of your truth table: both p and q are True, so p → q is also True.

PLEASE HELP

Which of the following graphs shows an angle that would have an equivalent cosine ratio to the graph shown?

Answers

Answer: 150 deg

Step-by-step explanation:

cosine is negative in quadrants 2 and 3. the current angle, 210, is in quad 3. It will have an equal cosine value in quad 2.

that angle will be -210 degrees. in positive terms that is 360-210 = 150 degrees.

thus the answer which shows 150 degrees is correct.

in general:

[tex]cos(x) = cos(-x)[/tex]

Quentin deposited $1,264 into a savings account that earns 2.75% simple interest annually. What will Quentin’s account balance be at the end of 2.5 years? Assume he makes no additional deposits during that time period.

Answers

Answer:

I love math

Step-by-step explanation:

The formula for simple interest is:

I = P * r * t

where:

I = interest earned

P = principal amount

r = interest rate (as a decimal)

t = time (in years)

In this case, we know that:

P = $1,264

r = 2.75% = 0.0275 (as a decimal)

t = 2.5 years

So, we can plug in these values and solve for I:

I = 1,264 * 0.0275 * 2.5 = $87.55

Therefore, the interest earned over 2.5 years is $87.55. To find the ending balance, we need to add the interest earned to the principal:

Ending balance = $1,264 + $87.55 = $1,351.55

So, Quentin's account balance will be $1,351.55 at the end of 2.5 years.

In the following probability distribution, the random variable
represents the number of activities a parent of a 6th-8th grade student is involved in.


Please round to 2 decimal places for a-c, 3 decimal places for the probability in part d.
X 0 1 2 3 4
P(X) 0.053 0.117 0.258 0.312 0.26
a) Compute and the mean,
, of the random variable
.
2.610
Correct

b) Compute the variance,
, of the random variable
.

c) Compute the standard deviation,
, of the random variable
.
1.14
Correct

d) What is the probability that a randomly selected student has a parent involved in 4 activities?

Answers

a) The mean of the random variable is 2.610 (rounded to 2 decimal places).

b) The variance of the random variable is 1.880 (rounded to 3 decimal places).

c) The standard deviation of the random variable is 1.372 (rounded to 3 decimal places).

d) The probability that a randomly selected student has a parent involved in 4 activities is 0.260 (rounded to 3 decimal places).

To compute the variance of the random variable, we need to calculate the squared deviation of each value from the mean, weighted by their respective probabilities, and then sum them up.

b) Variance [tex](\sigma^2)[/tex] of the random variable:

Variance is given by the formula[tex]Var(X) = \sum [(X - \mu)^2 \times P(X)],[/tex] where X represents the values of the random variable, μ is the mean, and P(X) is the probability.

Using the given data:

X: 0 1 2 3 4

P(X): 0.053 0.117 0.258 0.312 0.26

μ (mean): 2.610

Calculating the squared deviations for each value:

[tex](0 - 2.610)^2 \times 0.053 = 14.152[/tex]

[tex](1 - 2.610)^2 \times 0.117 = 0.291[/tex]

[tex](2 - 2.610)^2 \times 0.258 = 0.148[/tex]

[tex](3 - 2.610)^2 \times 0.312 = 0.122[/tex]

[tex](4 - 2.610)^2 \times 0.26 = 1.429[/tex]

Summing up the squared deviations:

Var(X) = 14.152 + 0.291 + 0.148 + 0.122 + 1.429 = 16.142

Therefore, the variance of the random variable is 16.142.

c) Standard deviation (σ) of the random variable:

The standard deviation is the square root of the variance.

Taking the square root of the variance calculated above:

Standard deviation (σ) = √(16.142) ≈ 4.020 (rounded to 3 decimal places)

d) Probability of a randomly selected student having a parent involved in 4 activities:

The probability of a specific value occurring in a discrete probability distribution is given by the corresponding probability value.

From the given data:

P(X = 4) = 0.26

Therefore, the probability that a randomly selected student has a parent involved in 4 activities is 0.26 (rounded to 3 decimal places).

For similar question on probability.

https://brainly.com/question/30846562

#SPJ11

Ratios are often represented by the symbol. For example, 5 : 4 might mean 5 eggs are needed for every 4 batches of cookies. Select all of the ratios that are equivalent to the ratio 12:3. 6:1 1:4 4:1 246 15:6 120 : 30​

Answers

The ratios that are equivalent to the ratio 12:3 are 4:1 and 120:30.

We have,

To determine the ratios that are equivalent to the ratio 12:3, we need to find ratios that have the same value when simplified.

The ratio 12:3 can be simplified by dividing both numbers by their greatest common divisor (GCD), which in this case is 3.

Dividing 12 by 3 gives us 4, and dividing 3 by 3 gives us 1. Therefore, the simplified ratio is 4:1.

Now let's check the given options:

6:1 - This ratio is not equivalent because it is different from the simplified ratio 4:1.

1:4 - This ratio is not equivalent because the order of the numbers is reversed, and it is different from the simplified ratio 4:1.

4:1 - This ratio is equivalent to the original ratio 12:3. When simplified, both ratios result in 4:1.

246 - This is not a ratio and cannot be compared to the original ratio 12:3.

15:6 - This ratio is not equivalent because it is different from the simplified ratio 4:1.

120:30 - This ratio can be simplified by dividing both numbers by their GCD, which is 30.

Dividing 120 by 30 gives us 4, and dividing 30 by 30 gives us 1.

Therefore, the simplified ratio is 4:1, which is equivalent to the original ratio 12:3.

Thus,

The ratios that are equivalent to the ratio 12:3 are 4:1 and 120:30.

Learn more about ratios here:

https://brainly.com/question/2462048

#SPJ1

A spherical boulder is 28 feet in diameter and weighs almost 8 tons. Find the volume Use 3.14 for pi

Answers

Answer:

V = (4/3) × 3.14 × 14³ = 11,310.08 cubic feet

Answer:  11,488.2133 cubic feet approximately

Work Shown:

d = diameter = 28

r = radius = d/2 = 28/2 = 14

V = volume of a sphere

V = (4/3)*pi*r^3

V = (4/3)*3.14*(14)^3

V = 11,488.2133 cubic feet approximately

The info "weighs almost 8 tons" is never used. It is likely an intended distraction. All we need is the radius of the sphere to get its volume.

PLEASE HELPPP IM CONFUSEDDDD

Answers

Answer: C: (-4,-3)

Step-by-step explanation:

You have the correct answer selected!

The solution of a system of equations is where the graphs of the two lines intersect. we can read that point to be (-4,-3), so thats the answer :)

the answer is C (-4, -3)

If tanA = 60/11 and sinB = 45/53 and angles A and B are in Quadrant I, find the value of tan(A-B)

Answers

Based on the information, it should be noted that the value of tan(A-B) is 234/583.

How to calculate the value

Given:

tanA = 60/11

sinB = 45/53

A and B are in Quadrant I

We can use the following identity to find tan(A-B):

tan(A-B) = (tanA - tanB)/(1 + tanA*tanB)

Substituting the given values, we get:

tan(A-B) = (60/11 - 45/53)/(1 + (60/11)*(45/53))

= (15/53)/(295/583)

= 234/583

Therefore, the value of tan(A-B) is 234/583.

Learn more about trigonometry on

https://brainly.com/question/24349828

#SPJ1

Define the term inflation ​

Answers

Answer: Inflation is the rise in general level of prices which is determined by the Consumer Price Index (CPI).

Inflation is an economic term that refers to a sustained increase in the general price level of goods and services in an economy over time. When the inflation rate rises, each unit of currency buys fewer goods and services than before. In other words, inflation decreases the purchasing power of money. Inflation can be caused by a number of factors, including an increase in the supply of money in the economy, an increase in demand for goods and services, or a decrease in the supply of goods and services. A moderate level of inflation is generally considered desirable by many economists as it encourages spending and investment, but too much inflation can lead to economic instability and uncertainty.

Sketch the region enclosed by
y
=
5
x
and
y
=
8
x
2
. Find the area of the region.

Answers

Answer:

  125/384 ≈ 0.32552

Step-by-step explanation:

You want the area between the curves y = 5x and y = 8x².

Area

The difference between the curves is ...

  f(x) = 5x -8x² = x(5 -8x)

This difference is zero when ...

  x = 0

  5 -8x = 0   ⇒   x = 5/8

The area will be the integral of f(x) with the limits 0 and 5/8:

  [tex]\displaystyle \text{area}=\int_0^\frac{5}{8}{(5x-8x^2)}\,dx=\dfrac{5}{2}\cdot\left(\dfrac{5}{8}\right)^2-\dfrac{8}{3}\cdot\left(\dfrac{5}{8}\right)^3\\\\\\\text{area}=\left(\dfrac{5}{8}\right)^2\left(\dfrac{5}{2}-\dfrac{8}{3}\cdot\dfrac{5}{8}\right)=\dfrac{25}{64}\cdot\dfrac{5}{6}=\boxed{\dfrac{125}{384}}[/tex]

<95141404393>

i need help can everyone please help me

Answers

Since AC is the angle bisector of ∠BAD, the flowchart proof should be completed as follows;

Statement                                 Reason

AC bisects ∠BAD                      Given

∠BAC ≅ ∠DAC                         Definition of an angle bisector.

∠BCA ≅ ∠DCA                         Congruent angles of a triangle (SAS).

AC ≅ AC                                   Reflexive property

ΔABC ≅ ΔADC                         AAS postulate

What is an angle bisector?

In Mathematics and Geometry, an angle bisector can be defined as a type of line, ray, or segment, that typically bisects or divides a line segment exactly into two (2) equal and congruent angles.

By applying the angle bisector theorem to the given triangle, we have the following statements and justifications:

AC bisects ∠BAD       Given

∠BAC ≅ ∠DAC           Definition of an angle bisector.

Based on side, angle, side (SA) and congruent angles of a triangle (SAS), we can reasonably infer and logically deduce that ∠BCA is congruent to ∠DCA i.e ∠BCA ≅ ∠DCA.

Read more on angle bisector here: brainly.com/question/18714022

#SPJ1

f+90+42=180 what is the answer of this

Answers

Answer:

hello

the answer is:

f = 180 - 42 - 90 = 48

The PTO is selling raffle tickets to raise money for classroom supplies. There is 1 winning ticket out of the 150 tickets sold. The winner gets a prize worth $200.

Round your answers to the nearest cent.

Make a probability distribution table and find the expected winnings of one raffle ticket. $?


If a raffle ticket costs $4, what is the expected profit or loss of one raffle ticket? (Enter a negative number for a loss) $?

Answers

Answer:

Expected winnings = $1.33

Expected profit or loss = -$2.67

Step-by-step explanation:

Winning Probability Prize Value

Yes   1/150         $200

No         149/150         $0

Expected winnings of one raffle ticket:

Expected winnings = (Probability of winning x Prize value) + (Probability of losing x Prize value)

Expected winnings = (1/150 x $200) + (149/150 x $0)

Expected winnings = $1.33

If a raffle ticket costs $4, the expected profit or loss of one raffle ticket can be calculated as:

Expected profit or loss = Expected winnings - Cost of ticket

Expected profit or loss = $1.33 - $4

Expected profit or loss = -$2.67

Write the word
sentence as an
inequality.
A number w plus 4.6
is more than 6.
An inequality is answer:

Answers

The inequality that represents the number sentence is given as follows:

w + 4.6 > 6.

What are the inequality symbols?

The four most common inequality symbols, and how to interpret them, are presented as follows:

> x: the amount is greater than x -> the number is to the right of x with an open dot at the number line. On the coordinate plane, these are the points above the dashed line y = x.< x: the amount is less than x. -> the number is to the left of x with an open dot at the number line. On the coordinate plane, these are the points below the dashed line y = x.≥ x: the amount is at least x. -> the number is to the right of x with a closed dot at the number line. On the coordinate plane, these are the points above the continuous line y = x.≤ the amount is at most x. -> the number is to the left of x with a closed dot at the number line. On the coordinate plane, these are the points below the continuous line y = x.

A number w plus 4.6 is represented as follows:

w + 4.6.

The amount is more than 6, hence the inequality is given as follows:

w + 4.6 > 6.

More can be learned about inequalities at brainly.com/question/25275758

#SPJ1

Complete the square to put
y=3x²-24x + 56 in vertex form.
a) y = 3(x-8)² +4
b) y=3(x-7)² +5
c) y = 3(x-6)² +6
d) y = 3(x - 5)² +7
e) y = 3(x-4)² +8

Answers

Answer would be E! Hope that was helpful!

need help with this please

Answers

The number that belongs in the green box is given as follows:

D.  2.

How to interpret the problem?

A quadratic function is given according to the following rule:

y = ax² + bx + c

The solutions are given as follows:

[tex]x_1 = \frac{-b + \sqrt{\Delta}}{2a}[/tex][tex]x_2 = \frac{-b - \sqrt{\Delta}}{2a}[/tex]

In which the discriminant is given as follows:

[tex]\Delta = b^2 - 4ac[/tex]

The number that goes into the green box is then given as follows:

2a = 2(1) = 2.

Meaning that option D is the correct option in the context of this problem.

More can be learned about quadratic functions at https://brainly.com/question/1214333

#SPJ1

Name the quadrant in which angle 0 must lie for the following to be true.

Answers

Answer:

d

Step-by-step explanation:

The Question is in the Picture, use the Pythagorean theorem to solve and show your work please

Answers

Answer:

y=8

Step-by-step explanation:

i need help can someone help me

Answers

The value of the side labelled x is equal to 3.8 to the nearest tenth using the trigonometric ratio of sine.

What is trigonometric ratios?

The trigonometric ratios is concerned with the relationship of an angle of a right-angled triangle to ratios of two side lengths.

The basic trigonometric ratios includes;

sine, cosine and tangent.

Considering the sine of angle 41°

sin 41° = 2.5/x {opposite/hypotenuse}

x = 2.5/sin 41° {cross multiplication}

x = 3.8106

Therefore, the value of the side labelled x is equal to 3.8 to the nearest tenth using the trigonometric ratio of sine.

Read more about trigonometric ratios here: https://brainly.com/question/3457795

#SPJ1

The accompanying diagram shows a revolving door with three panels, each of which is 4 feet long. What is the width, w, of the opening between x and y, to the nearest tenth of a foot?

Answers

The width, w, of the opening between x and y, is 6.9 ft.

We have,

From the diagram,

We have the radius of the circle and the angle subtended by the chord at the center of the circle.

So,

We can also use the formula.

= 2 x radius x sin(angle/2)

This is the length of the chord.

Now,

radius = 4 ft

angle = 360/3 = 120

Substituting the values.

= 2 x radius x sin(angle/2)

= 2 x 4 x sin (120/2)

= 2 x 4 x sin 60

= 2 x 4 x √3/2

= 4 x √3

= 4 x 1.732

= 6.928

Rounding to the nearest tenth.

= 6.9 ft

Thus,

The width, w, of the opening between x and y, is 6.9 ft.

Learn more about circle here:

https://brainly.com/question/11833983

#SPJ1

1.The volume of a triangular prism is 204cm3 . If its height is 17cm, then find the area of its base.





Answers

Answer:

12 cm ^2

Step-by-step explanation:

Using the formula

V=ABh

Solving forAB

AB=V

h=204

17=12cm²

How do you find the length of an arc expressed in terms of pi?

Answers

To find the length of an arc expressed in terms of pi, you need to use the formula L = (n/2) * (C), where L is the length of the arc, n is the number of pi radians in the arc, and C is the circumference of the circle. If the circle has a radius of r, then the circumference is C = 2 * pi * r. Therefore, we can rewrite the formula as L = (n/2) * (2 * pi * r) = n * r * pi. This formula tells us that the length of an arc expressed in terms of pi is equal to the radius of the circle times the number of pi radians in the arc.

sin( 3pi/4 ) =
O A. 1/2
OB. -√2/2
O C. √3/2
O D. √2/2

Answers

Answer:

sin(3pi/4 ) = -√2/2

So, B.

An isosceles right triangle has a third side measurement of 25 inches and a perimeter of 85 inches. The leg of the dilated triangle measures 6 inches. What is the perimeter of the dilated triangle?

Answers

In an isosceles right triangle, the two legs are equal in length. Let's assume that the length of each leg of the original triangle is "x" inches. Since it's an isosceles right triangle, the hypotenuse is also "x" inches.

Given that the third side of the original triangle measures 25 inches, we can set up the following equation based on the perimeter:

x + x + 25 = 85

Simplifying the equation:

2x + 25 = 85

Subtracting 25 from both sides:

2x = 60

Dividing both sides by 2:

x = 30

So, the length of each leg of the original triangle is 30 inches.

Now, let's consider the dilated triangle. We are told that the leg of the dilated triangle measures 6 inches. Let's assume the scale factor of the dilation is "k."

The length of each leg of the dilated triangle can be found by multiplying the length of the corresponding leg of the original triangle by the scale factor:

Leg of dilated triangle = k * Leg of original triangle

Leg of dilated triangle = k * 30

Given that the leg of the dilated triangle measures 6 inches, we can set up the following equation:

k * 30 = 6

Dividing both sides by 30:

k = 6/30

Simplifying:

k = 1/5

So, the scale factor of the dilation is 1/5.

Now, to find the perimeter of the dilated triangle, we need to multiply the length of each side of the original triangle by the scale factor and sum them up:

Perimeter of dilated triangle = 2 * (k * 30) + k * 25

Plugging in the values:

Perimeter of dilated triangle = 2 * (1/5 * 30) + 1/5 * 25

Simplifying:

Perimeter of dilated triangle = 2 * 6 + 5

Perimeter of dilated triangle = 12 + 5

Perimeter of dilated triangle = 17 inches

Therefore, the perimeter of the dilated triangle is 17 inches.

I WILL GIVE BRAINLIEST, square root of x, find the domain of x

Answers

The domain for the square root function is the set of all whole numbers

Calculating the domain of the square root function

From the question, we have the following parameters that can be used in our computation:

Function type = square root function

Equation: square root of x

This means that

f(x) = √x

The domain for x in the function is the set of input values the function can take

In this case, the square root function can take any whole number as its input

This means that the domain for f(x) is the set of all whole number

Read more about domain at

https://brainly.com/question/30808234

#SPJ1

Kendra's Tea Shop has caffeinated tea and decaffeinated tea. The tea shop served 87 caffeinated teas and 13 decaffeinated teas. What percentage of the teas served were caffeinated?

Answers

Answer:

Kendra's Tea Shop served 87 caffeinated teas and 13 decaffeinated teas. This means that 87 out of 100 teas served were caffeinated. Therefore, 87% of the teas served were caffeinated.

Other Questions
A solution is prepared by adding 0.10 mol of sodium sulfide, Na2S , to 1.00 L of water. Which statement about the solution is correct? a. The solution is basic. b. The solution is neutral, c. The solution is acidic. d. The concentration of sodium ions and sulfide ions will be identical. e. The concentration of sulfide ions will be greater than the concentration of sodium ions. item response theory is to latent trait theory as observer reliability is to terse, snappy pronouncements that typically overturned conventional wisdom forcing people to think about the world in new ways are known as in mandarin, chinese opera is called xiqu, which means The Miller School of Business at Ball State University claims to have a 73% graduate rate from its Online MBA program. A happy student believes that the 3-year graduation rate is higher than that. A sample of 500 students indicates that 380 graduated within three years. What is the p-value for the test of the happy student's claim? Round your answer to three decimal places. Why shouldn't you rely on your side view and rear view mirrors when changing lanes? Knowingly creating a substantial and unjustifiable risk is the definition ofa. Negligenceb. Gross Negligencec. Recklessnessd. Criminal negligence According to a summary of the payroll of Guthrie Co., $560,000 was subject to the 6.0% social security tax and the 1.5% Medicare tax. Also, $60,000 was subject to state and federal unemployment taxes. Required A. Calculate the employer's payroll taxes, using the following rates: state unemployment, 5.4%; federal unemployment, 0.6%, What do you see as the strengths and limitations of an evolutionary psychological approach to human nature in general and, more specifically, to human personality? Consider the possibility that we will never have a complete understanding of human nature and human personality if we do not recognize the evolutionary history of humans, including the adaptive problems that ancestral humans recurrently faced. what two factors enable saturn to retain its primordial hydrogen? Which of the following measures of variability is used when the statistics having the greatest stability is sought?Mean DeviationStandard DeviationQuartile DeviationRange A 90% confidence interval for the proportion of Americans with cancer was found to be (0.185,0 210). The point estimate for this confidence interval is. a. 00125 b.1645 c. 0.1975 d.0.395 .Target is Trying to Overcome the Problem of "Showrooming"The competitive landscape in the realm of retail has changed and is continuing to change in recent years. One factor that has helped to shape and change the field is the notion of showrooming. Showrooming involves consumers going into brick-and-mortar stores to check out a product only to later purchase it at a cheaper price from an online retailer. This is a real and tangible problem directly impacting the bottom line that retailers must figure out how to deal with.Target is attempting to combat the issue of showrooming. The costs associated with being a brick-and-mortar retailer, such as the cost of the building, inventory holdings, and labor in a marketplace that is extremely competitive, create a situation where every sale counts. When you as a retailer have invested in a brick-and-mortar location and your customers come in to look at your products, you need them to make a purchasefrom you. Showrooming involves customers using information technology to price-shop for the products you are displaying but ultimately making their purchase from a lower-cost online retailer. This is a recipe for disaster. This case touches on Target's current campaign to address the issue. A typical green laser pointer has a power output of 1.00W and a wavelength of 530 nm.How many photons per second does the laser emit (in units of 10^18 photons/sec)?(A) 1.29 (B) 2.67 (C) 3.86 (D) 4.38 (E) 5.38 what kind of societal change was happening in modernist literature A first order reaction requires 30 minutes for 50% completion. The time required to complete the reaction by 75% will be: the time constants from the average slope valus. 7. Compute -RiG and n 2 from the given resistance and capacitance values, and compare with the experimental values by finding the percent errors. QUESTIONS 1. what is the time constant for an RC circuit with R-45 k and C-1.2 ? 2. If it takes 5 s for a capacitor to charge to half the battery voltage, through a 10 k2 resistor, what is the capacitance C? 3. A given RC circuit charges through a particular resistor R, and capacitor, C. If I double the capacitance, what happens to the time constant? What if I double the resistance? 40 treatment options for coronary artery disease (cad) include quizlet revenues represent a. decreases in assets and/or decreases in liabilities. b. decreases in assets and/or increases in liabilities. c. increases in assets and/or increases in liabilities d. increases in assets and/or decreases in liabilities. Why do you think momma speaks "southern-style" when she gets angry? Watsons go to Birmingham ham - 1963 chapter 5