When a stone is dropped in a pond ripples are formed and travel in concentric circles away from where the stone was dropped. The relationship between the time and area if the circles was analyzed and is shown in the computer output.

What is the equation of the least/squares regression line?

Distance = Speed x time

For the run; speed = 5 mi/hr, time = t

For the walk: speed= 2 mi/hr, time = t + 1

Since he walked on a straight line and he returned following the same path

Distance travelled for the run = distance travelled for the walk

Distance for run: 5 x t = 5t

Distance for walk : 2 (t + 1) =2t + 2

Thus , 5t = 2t + 2

5t - 2t = 2

3t = 2

t = 2/3 hour = 2/3 x 60 minutes = 2x 20 = 40 minutes

He took him 40 minutes to run

Given that 25% of 80 is 10% of a number.

We have to find the number.

Let the number be x. So, 25% of 80 is equal to 10% of x. Therefore,

Thus, the number is 200.

PART 1)

Range of intersection 1

(Max value - Min value )=

Largest value = 31 , Lowest value = 26

Then range1 is 31 - 26 = 5 miles /hour

Now PART 2:)

Maximum value= 27

Minimum value = 22

Then range2 is 27-22 = 5 miles/hour

data

Area = 126pi m^2

diameter = 22

TA = pi r h + pir^2

126pi = LA + pi(11)^2

LA = 126pi - 121pi

LA = 5pi

Letter B.

Concept:

Parallel planes are planes in the same three-dimensional space that never meet.

Parallel Lines or parallel Segments are always the same distance apart, they will never meet.

skew lines are two lines that do not intersect and are not parallel.

Question: Name a plane parallel to plane PQR:

Answer: plane JKL

Question: Name a segment parallel to segment KP:

Answer: segment OJ

Question: Name a segment that is skew to OJ

Answer: segment SR

Answer

Age of Car in years is represented as x

Avg. Miles per Gallon is represented as y

y = 0.97x + 1.214

Correlation Coefficient = 0.673

Explanation

Age of Car in years is represented as x

Avg. Miles per Gallon is represented as y

The datapoints are fed into a calculator and plotted with the datapoints also processed according to some formulas that'll be provided here

The first figure contains the data points and the regression data processed to be used to calaculate the required parameters.

The second attached image shows the plotted data and the line of best fit and the equation that best represents the relationship between the two parameters.

Then the last image shows the parameters used to calculate the equation of correlation and the correlation coefficient.

Hope this Helps!!!

ANSWER:

40%

STEP-BY-STEP EXPLANATION:

In this case, what we must do is calculate the percentage that represents 21 miles, assuming that 100% is 15 miles, like this

Now we subtract 100% from this value, like this:

Explanation

Step 1

we have two triangles

ACE and BCD

if the triangles are similar, then the ratio of the sides must be the same:

Step 2

solve for x

rounded

I hope this helps you

slope of line is -3 for points (1,0) and (0,3)

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

From graph let us take two points (1, 0) and (0, 3)

x₁=1, x₂=0, y₁=0,y₂=3

Substitute these values in slope formula

m=3-0/0-1

m=3/-1

m=-3

Hence slope of line is -3.

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We can have more arguments to prove that PQRS is a rhombus, but, the argument that we will use here is:

Let's look at the first statement, we have

That's not correct, it would just prove that QR/2 > PS/2,

This statement implies

We cannot conclude that

The next statement is

A rhombus can have different diagonals, and in fact they have. Then let's go to the next one

That also not exactly says it's a rhombus, it's a pallelogram property.

By doing that we have that the diagonal bissects the angle

That implies that the angle b is also bissect.

The last statment is

That's literally the vertex angle, it's true always, not only in that case, therefore the only possible answer is

Pro

not continuous, 2 holes. Option A is correct

For a function to be continuous, the left hand limit of a function must be equal to the right hand limit at the point x = a

From the graph shown you can see that the limit of the function from the left is not equal to the limit of the function from the right at x = 0. Therefore, we can conclude that there are discontinuities at x = 0.

You can also see that the function has 2 holes at (0, 0) and (0, -1).

Step-by-step explanation:

as the intersection angles of parallel lines with a third line are the same for both parallel lines (and then vice versa for the other pair of parallel lines), we have a lot of equal angles here.

not to forget : the sum of all angles around a single point on one side of a line is always 180°.

51 = (y + z)

(6z + 9y) = x

x + (x + z) = x + 51 = 180°

x = 129°

we have now

y + z = 51

9y + 6z = 129

so,

z = 51 - y

9y + 6(51 - y) = 129

9y + 306 - 6y = 129

3y = -177

y = -59

z = 51 - y = 51 - -59 = 51 + 59 = 110

the value of z that makes j and k parallel is 110.

We use the formula for the area "A" of a square with equal sides of length "l":

Since we know the value of the area is:

We substitute that value into the formula for the area:

Next, we take the square root of both sides of the equation:

On the right side, the exponent and the square root will cancel, and we will get "l", and on the left side, we calculate the square root:

Which can be rounded to the closest value, that is 15 ft.

Answer: 15 feet

The factorised form of the expression given in the task content is; 2x² + 7x + 3 is; (2x + 1) (x + 1).

It follows from the task content that the factorised form of the expression is to be determined.

On this note, the factorised form of the expression is as follows;

2x² + 6x + x + 3.

By grouping terms; we have;

(2x² + 6x) + (x + 3).

Factorise two terms each at as follows;

2x(x + 1) + 1(x+3)

(2x + 1) (x + 1)

Therefore, the factorised form of the expression; 2x² + 7x + 3 is; (2x + 1) (x + 1).

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Solution

Step 1

f(x) = xsinx

Step 2

Step 3

Final answer

A. 1

Answer:

A circle is a closed geometric figure without any sides or angles. The unit circle has all the properties of a circle, and its equation is also derived from the equation of a circle. Further, a unit circle is useful to derive the standard angle values of all the trigonometric ratios.

Step-by-step explanation:

From properties of linear equation, 1036 students attend east high school.

What is linear equation?

An algebraic equation with simply a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.

Let east high school have x students

West high school have 2x - 250

Total count of students from both the schools are 2858 students.

Then we get

x + 2x-250 = 2858

=> 3x - 250 = 2858

=> 3x = 2858 + 250

=> 3x = 3108

=> x = 3108/3

=> x = 1036

Therefore, 1036 students attend east high school.

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Explanation:

The question wants us to list out all the possible outcomes in question 18

From the question

We have a spinner that has 5 possible outcomes

The outcomes of flipping a coin are

Thus, to get the possible outcomes, we will have

1. angle j and k.

Due to the Converse of Corresponding Angles Postulate, j || k.

2. Angles 2 and 5 are the alternating inner angles of the lines j and k. Given that angle 2 = angle 5,

The Converse of Alternate Interior Angles Theorem states that j || k.

J || K converse alternative interior angles.

similarly

3. angle 3 = angle 10 The exterior angles of the lines l and m, respectively, are angle 3 and angle 10. Since the Converse of Alternate Exterior Angles Theorem states that angle 3= angle 10, l || m.

converse alternative exterior angles l || m.

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Given:

Two vectors (u) and (w) and the angle between them θ

the sketch of the vectors will be as shown in the following figure:

As shown, the resultant vector is the blue line segment

The vector R has a magnitude = 60.22

And the angle between u and R = 5.56°

To answer this we have to apply the simple interest formula:

I =P x r x t

Where:

I= interest

P= Principal

R= Interest rate ( in decimal form)

t = time (years)

Replacing with the values given:

Interest= I

Principal = ?

Interest rate = 2/100 =0.02

time= 5 years

I = P x 0.02 x 5

I= 0.1P

Amount= P+I

A = P+0.1P

5,000= P+0.1P

5,000= 1.1P

5,000/1.1 =P

4,545.45 =P

Piecewise Function

We are given the piecewise function shown in the figure.

We are required to calculate g(4) - 3g(3).

First, we calculate g(4). Since 4 is greater than 3, we use the second function:

Now we need to calculate g(3). We use the same function because 3 is greater or equal to 3:

Now we calculate:

g(4) - 3g(3) = 273 - 3*90 = 273 - 270 = 3

Answer: 3

Answer:

1500 m

Step-by-step explanation:

given that the field is 100m by 50m we can find that the perimeter of the field is 300m. if she jogged 300m 5 times she would have jogged 1500m

Solution

for this case the point that lies on the y axis need to satisfy that the x coordinate must be:

x= 0

then the best solution would be:

(0, -4)

The set that represents a right triangle has to satisfy Pythagorean's Theorem where the greatest side is the hypothenuse. Let's evaluate each of them until we get the right set.

As you can observe, set B satisfies the theorem.

Area of shaded triangle = Area of triangle - area of circle

Area of triangle = 1/2 x base x height

Base= 16 yds

Height= 19 yds

Area of triangle = 1/2 x 16 x 19 = 8 x 19 =152 square yard

Area of shaded triangle = 152 - 78.5 =73.5 square yard

∠6 and ∠5 are alternative interior angle thus the measure of angles ∠5 = 45° , ∠6 = 45° ,∠7 = 45° and ∠8 = 135°.

An angle is a geometry in plane geometry that is created by 2 rays or lines that have an identical terminus.

The identical endpoint of the two rays—known as the vertex—is referenced as an angle's sides.

Angles 1,2,7 are the interior angles of a triangle and we know that the sum of all interior angles inside a triangle is 180°.

Therefore, ∠1 + ∠2 + ∠7 = 180°

Given, ∠1  = 70° and  ∠2  = 65°

∠7 = 180° - (70 + 65) = 45°

Now, ∠8 = 180 - ∠7 ⇒ ∠8 = 135°

Now, ∠7 = ∠6 (vertical opposite angle) so ∠6 = 45°

∠6 = ∠5 (alternative interior angle) so ∠5 = 45°

Hence "∠6 and ∠5 are alternative interior angle thus the measure of angles ∠5 = 45° , ∠6 = 45° ,∠7 = 45° and ∠8 = 135°".

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Answer:

P(2 or odd)=1

Explanation:

The spinner has 3 parts.

The probability of spinning a 2:

The probability of spinning an odd number (1, 3):

Therefore:

Answer:

520<400+15x

15x>120

15x+400>520

Explanation:

Pay of Dan's car wash attendant job =$400 per week

The amount he earns per hour walking dogs = $15

Let the number of hours spent walking dogs in a week = x

Therefore, total earning for walking dogs =$15x

Since he wants to earn more than $520, we have that:

We can rewrite this as:

If we collect like terms, we have:

So the inequalities are:

0. 520<400+15x

1. 15x>120

2. 15x+400>520