Michael solved the given problem. Determine whether Michael's work is correct. If not, which step is incorrect?
Responses
A Step 1
B Step 4
C Step 3
D Step 2

Answer: A

Step-by-step explanation: -87

The domain and range of the graph are domain = [-2, 5] and range is [-6, 2] and the graph is not a function

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

The graph

On the graph, we have the x values to be

x = -2 to 5

On the graph, we have the y values to be

y = -6 to 2

This means that domain = [-2, 5] and range is [-6, 2]

The graph is the graph of a circle

A circle does not represent a function

Hence, the graph is not a function

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Step-by-step explanation:

Direct variation means    y = k x

when y = 2      x= 3

   2 =  k *3

   2/3 = k

so the variation becomes y = 2/3 x

            when x = 2

                     y = 2/3 (2)=   4/3

There are 32 cm² of frosting will take to cover the outside.

Given that;

Base of house = 2 cm

And, Height of house = 3 cm

Since, The shape of house is like a prism.

We know that;

Area of Prism is,

SA = 2B + ph,

where B, stands for the area of the base, p represents the perimeter of the base, and h stands for the height of the prism.

Hence, We get;

SA = 2 × (2 × 2) + 2 (2 + 2) × 3

SA = 8 + 24

SA = 32 cm²

Hence, There are 32 cm² of frosting will take to cover the outside.

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The explicit rule for the sequence 4, 3 2/3, 3 1/3, 3.... is f(n) = 4 - 1/3(n - 1)

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

4, 3 2/3, 3 1/3, 3....

In the above sequence, we can see that 1/2 is subtracted from the previous term to get the new term

Take for instance

2nd = 4 - 1/3 = 3 2/3

3rd = 3 2/3 - 1/3 = 3 1/3

4th = 3 1/3 - 1/3 = 3

And so on

This means that

So, the explicit rule is

f(n) = a + (n - 1)d

This gives

f(n) = 4 - 1/3(n - 1)

Hence, the explicit formula is f(n) = 4 - 1/3(n - 1)

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Complete question

Consider the sequence 4,3 2/3,3 1/3, 3....

What is the explicit rule for this sequence

The boat is moving at 48 mph while the current is moving at 9 mph in still water.

Let's use the letters "B" for the boat's speed in still water and "C" for the current's speed.

The boat's effective speed upstream is B - C because it is moving against the current.

Since the boat is moving downstream against the tide, its effective speed is equal to B plus C.

Based on the supplied data, we can construct the following two equations:

234 = 6(B - C)

342 = 6(B + C)

Making these equations simpler:

39 = B - C

57 = B + C

Now that we have added the two equations, we may solve for B and C:

39 + 57 = 2B

96 = 2B

B = 48

Therefore, the boat's speed in calm water is 48 mph.

To find C, we can rewrite one of the initial equations with this value as a substitute:

39 = 48 - C C = 9

Thus, the current is moving at a 9 mph velocity.

Therefore, the boat is moving at 48 mph while the current is moving at 9 mph in still water.

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(x+3)²+(y+7)²=169 is  the equation of the circle if (-3,-7) is a point on the circle and the midpoint of the circle's diameter is (2,5).

The equation of the circle if (-3,-7) is a point on the circle and the midpoint of the circle's diameter is (2,5).

The radius of the circle is 13

The equation of circle in standard form is (x-h)²+(y-k)²=r²

(h, k) is centre of circle

(-3, -7) is centre

(x+3)²+(y+7)²=13²

(x+3)²+(y+7)²=169

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The segment lengths on the right triangle are given as follows:

The three trigonometric ratios are the sine, the cosine and the tangent, and they are defined as follows:

The sum of the internal angle measures of a triangle is of 180º, hence the missing angle is given as follows:

m < L = 180 - (30 + 60)

m < L = 90º.

Hence the segment JL represents the hypotenuse of the figure.

JL is opposite to the angle K, hence it's length is obtained as follows:

sin(30º) = JL/26

1/2 = JL/26

2JL = 26

JL = 13.

Segment KL is adjacent to the angle of 30º, hence it's length is obtained as follows:

cos(30º) = KL/26

[tex]\frac{\sqrt{3}}{2} = \frac{KL}{26}[/tex]

[tex]2KL = 26\sqrt{3}[/tex]

[tex]KL = 13\sqrt{3}[/tex]

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The measure of ∠BPO is 48°.

Since PD bisects ∠BPA, we can say:

∠AOC = ∠BOC .

Thus, ∠ BOC = 42°

Since PB is tangent to the circle, PBO = 90°.

Looking at triangle PBO, we can say:

∠BPO + ∠PBO + ∠BOC = 180  (angles in a triangle add up to 180)

∠BPO + 90 + 42 = 180

∠BPO + 132 = 180

∠BPO = 180 - 32

∠BPO = 48°

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Complete Question

Check image attached

The minimum number of people over age 30 they must include in their sample is: 829 people

The formula for calculating the standard error is:

SE = μ ± Z(σ/√N)

Where:

σ = the standard deviation,

N = the sample size,

Z = the Z value for the percent confidence level desired.

We must find the Z value, at the 85% confidence level from a Cumulative Standardized Normal table for the 99% confidence level. This gives us the value of Z = 1.44

σ = 1.4 liters

N = 0.07

Thus:

0.07 = 1.44(1.4/√N)

0.07/1.44 = 1.4/√N

1.4/√N = 0.04861

√N = 1.4/0.04861

N = (1.4/0.04861)²

N = 829 people

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The direction angle of the vector with initial point (1, -1) and terminal point (7, 2) is approximately 26.57 degrees, found by calculating the arctangent of the ratio of the y and x components of the vector.

The direction angle of the vector v is the angle it makes with the positive x-axis, measured counterclockwise.

To find this angle, we need to calculate the difference between the y-coordinates and x-coordinates of the terminal and initial points of the vector, respectively. Then, we can use the arctangent function to find the angle.

Let's first find the components of the vector v

v = <7 - 1, 2 - (-1)> = <6, 3>

Now, we can find the direction angle as follows

θ = arctan(3/6)

θ = 0.4636 radians (in decimal form)

To convert this to degrees, we can multiply by 180/π

θ ≈ 26.57°

Therefore, the direction angle of the vector v is approximately 26.57 degrees.

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Note that the probabilities are given below.

a) the probability of a randomly selected catch being a mouse caught by Cyd

p(Catching a mount) x p(Cyd made the catch)

= 0.5x .2

= 0.1

b) the   probability of a bird not caught by Cyd is 0.5 x 0.8 = 0.4.

Thus

P(that a catch is a bird) x p(the Cyd didn't make the catch)

= 0.3 x 0.8

=0.24

c) The probability of a randomly selected catch being caught by Greg is 0.45

To calculate, we say

(0.5   x0.45) + (0.3 x 0.45) + (0.2 x .45)

= 0.45.

d)

P (mouse caught by Greg) = (0.45 x 0.5) / 1

= 0.225.

e) P(catch is a mouse caught by Ken and catch is a mouse)

= P(catch is a mouse | catch is made by Ken) x P(catch is made by Ken)

= 0.05 x 0.1

= 0.005

f)

P (catch made by Cyd | catch is a mouse)

= 0.1    x 0.2 / 0.5

= 0.04

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Answer:

-6x - 2y = 12

Step-by-step explanation:

The correct answer is option B:

⇒ Y decreases and X increases.

Given that;

the y value starts to decrease and the x value remains the same over time.

Now, We know that;

the slope remains constant, but the y value decreases as you move along the slope in the negative y direction, while the x value increases.

Hence,

If the y value starts to decrease while the x value remains the same over time on a consistent slope,

Thus, The correct answer is option B:

⇒ Y decreases and X increases.

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Answer:

[tex] {x}^{2} + 11x + 18 = [/tex]

[tex](x + 2)(x + 9)[/tex]

The two numbers are 2 and 9.

2 + 9 = 11, and 2 × 9 = 18.

The yield to maturity on Bond B is 9%

We know that Zero Coupon Bond Value= F/(1+r)^t

F= Face Value =100

r= Rate of interest

t= time to maturity =2Yrs

Price= F/(1+r)^t

84.18 = 100/(1+r)^t

(1+r)^t=100/84.18

(1+r)^2=1.18793

1+r=(1.18793)^(1/2)

r = 1.089922 - 1

r = 8.9922%

r = 9% (Approx)

In conclusion, the yield to maturity on Bond B is 9%

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Answer:

The answer to your problem is, She spend more talking to her friend then her mother

Step-by-step explanation:

The question asking:

What fraction of the minutes did Emilia spend talking to either her mom or her best friend?

So we can see that she talks to her friend instead of her mother shown;

[tex]\frac{1}{12} < \frac{5}{12}[/tex]

The total equals to [tex]\frac{6}{12} or\frac{1}{2}[/tex]

So, She spend more talking to her friend then her mother

Thus the answer to your problem is, She spend more talking to her friend then her mother

Approximately, the amount of money, in cents, that Celine will save in 12 years is: B. 300

In this scenario, the years would be plotted on the x-axis (x-coordinate) of the scatter plot while the money (in cents) would be plotted on the y-axis (y-coordinate) of the scatter plot through the use of Microsoft Excel.

On the Microsoft Excel worksheet, you should right click on any data point on the scatter plot, select format trend line, and then tick the box to display an equation for the line of best fit (trend line) on the scatter plot.

From the scatter plot (see attachment) which models the relationship between the years and the money (in cents), an equation for the line of best fit is given by

y = 26.9x - 18.5

when x = 12, the amount of money, in cents, that Celine will save in 12 years is given by;

y = 26.9(12) - 18.5

y ≈ 300 cents.

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The estimate of the population mean is 80 and the variability in the distribution is 120

Here, we have

The dot plots

From the dot plots, we can see that the data are normally distributed

This means that the mean, the median and the mode are equal

From the distribution of the random variable, we have the following readings

Hence, the estimate of the population mean is 80

Here, we use the range

So, we have

Variability = Highest - Least

This gives

Variability = 140 - 20

Variability = 120

So, the variability in the distribution is 120

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The surface area of the polyhedron is calculated be equal to 224 square inches.

The polyhedron can be observed to have a large rectangle between two identical triangles by the sides

area of rectangle = length × width

The large rectangle have;

length = (12 + 10 + 10) in = 32 in

width = 4 in

area of large rectangle the = 32 in × 4 in = 128 in²

area of one identical triangles = 1/2 × 12 in × 8 in = 48 in²

area of 2 identical triangles = 2 × 48 in² = 96 in²

Surface area of the polyhedron = 128 in² + 96 in²

Surface area of the polyhedron = 224 in²

Therefore, the surface area of the polyhedron is calculated be equal to 224 square inches.

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Answer:

The last option

[tex]r = \dfrac{14}{6\cos\theta - \sin\theta}[/tex]

Step-by-step explanation:

Given equation is 6x - y = 14

To convert an equation in rectangular(cartesian) form, f(x, y) to polar f(r, θ) we use the following information

x = rcosθ

y = rsinθ

Substituting for x and y in the original rectangular equation 6x - y = 14,

6(rcosθ) - rsinθ = 14

Factoring out r on the left side,
r(6cosθ - sinθ) = 14

which gives

[tex]r = \dfrac{14}{6\cos\theta - \sin\theta}[/tex]

That would be choice  4

Answer:

Step-by-step explanation:

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The function is :

[tex]f(x) =\frac{-1}{25x^{2} },x < 0[/tex] the inverse function is:

Inverse function: [tex]f^-^x(x)=-\frac{\sqrt{\frac{-1}{x} } }{5}[/tex]

Domain: (-[tex]\infty[/tex],9]

Range: [tex](-\infty,0][/tex]

If the inverse function of f is the function g, then x = f(x) gives x = g(y). We just need to reverse the function.

An inverse function or an anti function is defined as a function, which can reverse into another function. In simple words, if any function “f” takes x to y then, the inverse of “f” will take y to x. If the function is denoted by ‘f’ or ‘F’, then the inverse function is denoted by f-1 or F-1. One should not confuse (-1) with exponent or reciprocal here.

If f and g are inverse functions, then f(x) = y if and only if g(y) = x

The function is :

[tex]f(x) =\frac{-1}{25x^{2} },x < 0[/tex]

We have to find the inverse of the function.

The inverse, interchange the variables solve for y,

Now,

[tex]f(x) =\frac{-1}{25x^{2} },x < 0[/tex]

[tex]f^-^x(x)=\frac{\sqrt{\frac{-1}{x} } }{5}[/tex]

So, [tex]f^-^x(x)=-\frac{\sqrt{\frac{-1}{x} } }{5}[/tex]

Hence,

Inverse function: [tex]f^-^x(x)=-\frac{\sqrt{\frac{-1}{x} } }{5}[/tex]

Domain: (-[tex]\infty[/tex],9]

Range: [tex](-\infty,0][/tex]

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Answer:The algebraic steps you have taken are incorrect, leading to an invalid conclusion. Let's go through each step and see where the mistake is made:

X = 1 (given)

X+X = 1+X (adding X to both sides)

2X = 1+X (combining like terms)

2X = X+1 (rearranging terms)

2X-2 = X+1-2 (subtracting 2 from both sides)

2X-2 = X-1 (simplifying)

2(x-1)/(x-1) = (x-1)/(x-1) (dividing both sides by x-1, note that x cannot be 1 as it would result in division by 0)

2 = 1 (canceling out the (x-1)/(x-1) on both sides)

The error lies in dividing both sides by (x-1) in step 7. Although (x-1) appears on both sides of the equation, it is not equal to zero as x cannot be 1 due to division by zero. Dividing by (x-1) effectively cancels it out, leading to the incorrect result of 2=1.

Step-by-step explanation:

The requried insurance premium of a bus whose insured value is GH¢250.00 is GH¢130.80.

The insurance premium of a bus is GH¢93.30 plus 15% of the insured value.

Let's first calculate 15% of¢250.00:

15% of GH¢250.00 = 0.15 x 250.00 = GH¢37.50

Now, we can add this amount to the base premium of GH¢93.30 to find the total insurance premium for the bus:

GH¢93.30 + GH¢37.50 = GH¢130.80

Therefore, the insurance premium of a bus whose insured value is GH¢250.00 is GH¢130.80.

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Note that the above prompt requires you to under stand what a W-4 form is  and how to complete one.

Rbecca needs to s tart by entering your personal information in boxes 1-4, including your name, address, Social Security number, and filing status. In this case, Rebecca Kate Foster's information is:

Box 1: Rebecca Kate Foster

Box 2: 1234 Main St.

Box 3: New York, NY 12345

Box 4: 123-45-6789

Box 5: Single

In box 6, write "1" since Rebecca only has one job.

Rebecca can claim the standard deduction or itemize deductions in box 7. She may benefit from itemizing deductions because she has donated $3,960 to charity in the last year.

Rebecca can claim whatever excess tax withholding she wants each paycheck in box 8. She may not need to withhold any further taxes because she has no dependents and is not married. If she prefers, she can leave this section blank.

Rebecca can claim any extra withholding for the year in box 9. If she anticipates to owing taxes at the end of the year, she may want to withhold more from each paycheck to prevent a hefty tax payment later. If she anticipates a reimbursement, she should withhold less. She can use the IRS's withholding calculator to determine the right amount.

Finally, sign and date the form in box 5 before submitting it to your company.

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Full Question:

Although part of your question is missing, you might be referring to this full question:

DIRECTIONS Read the scenario below and fill out the W-4 form using the information provided. Then, read the W-2 form and answer the questions that follow. W-4 Form Rebecca Kate Foster is starting a new job. She is 23 years old and graduated from college with no student loan debt. This is her only job, and she makes a salary that allows her to bring home $3,300 a month. She’s not married and has no children or anyone else who is supported by her income. Over the past year, she has given a total of $3,960 to charity. Her address is 1234 Main St., New York, NY 12345, and her Social Security number is 123-45-6789.

The match terminates as soon as the central heap runs out of cards whose factor are not present elsewhere, resulting in a score of 92 - falling short from 100.

It should be noted that to acquire a higher point achievement, alternative approaches can be tested; however, reaching beyond the hundred mark is not guaranteed.

Conversely, with each 20-game, the final outcome should contain 8 or fewer pieces in the tally pile since there are strictly 17 cards eligible to be shifted into this collection. Subsequently, due to the 138 maximum points potential (stated in part B), and the entire set amounting for 210 points - the minimum count for items within the discard pool will be 3 (as calculated from 20 - 17).

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The perimeter of the rectangle is P = 18 units

Given data ,

Let the rectangle be represented as ΔWXYZ

Now , the coordinates of the triangle are

W ( 3 , 3 ) , X ( 8 , 3 ) , Y ( 8 , 7 ) and Z ( 3 , 7 )

The perimeter of the rectangle = 2 ( length + width )

The width of the rectangle W = ( 7 - 3 ) = 4 units

The length of the rectangle L = ( ( 8 - 3 ) = 5 units

So , P = 2 ( 4 + 5 )

P = 2 x 9

P = 18 units

Hence , the perimeter is 18 units

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