Ask question

Ask question

All categories

2 years ago

5

Point P is located at (−2, 7), and point R is located at (1, 0). Find the y value for the point Q that is located two over three

the distance from point P to point R

1 answer:

irinina [24]2 years ago

8 0

Answer:

7/3

Step-by-step explanation:

The distances have the ratio ...

(Q -P) = (2/3)(R -P)

Q = P +(2/3)R -(2/3)P = (2R +P)/3

Qy = (2Ry +Py)/3 = (2·0 +7)/3 = 7/3

You might be interested in

Compare the graph of the function, g(x)=(1)/(x-1)-3(, with the graph of its parent function. ) Which of the following options be

mars1129 [50]

Answers:

right 1, down 3 (these two answers only)

Step-by-step explanation:

There are two transformations going on. The first of which is the horizontal or x translation (aka shifting) where the 'x' turns into 'x-1'. This moves the xy axis 1 spot to the left, giving the illusion that the graph moves 1 unit to the right.

The "-3" at the end shifts the graph down 3 units. If g(x) = f(x) - 3, then g(x) is the output of f(x) but 3 less than that, which is why it shifts down 3 units.

4 0

2 years ago

Students sometimes suspect that studying more isn't worth it for "harder" math and science classes: either you understand it, or

Zolol [24]

ANSWER: The statistical procedure that should be performed is REGRESSION.

Step-by-step explanation: Regression is a statistical procedure that is used to estimate the relationship between an independent variable and a dependent variable using their mean values.

The independent variable in this case is the hours each student spend in studying, while the dependent variable is the students grade.

Since the researcher wants to determine if the hours a student spend in studying maths and science has any significant effect on their grades. The researcher should use regression, because it will show if the two variables are related and how it relates, by showing how far the points are from the trend lines of the graph.

6 0

3 years ago

A corporation with several thousand employees wants to estimate the mean commute time for all employees. They would like to cons

velikii [3]

Answer:

C.25

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Which of the following is the smallest sample the company can take to achieve the desired margin or error?

This is n when $\sigma = 10, M = 4$

$M = z*\frac{\sigma}{\sqrt{n}}$

$4 = 1.96*\frac{10}{\sqrt{n}}$

$4\sqrt{n} = 1.96*10$

$\sqrt{n} = \frac{1.96*10}{4}$

$(\sqrt{n})^{2} = (\frac{1.96*10}{4})^{2}$

$n = 24.01$

We have to round up.

So the correct answer is:

C.25

3 0

2 years ago

4. In your own words, define a perfect square Provide three examples of<br> perfect squares.

xz_007 [3.2K]

Answer:

A number that can be divide by 2 numbers that are the exact same ex: 144-12 16-4, 64-8

Step-by-step explanation:

4 0

2 years ago

20 POINTS * A circle has a radius of 6. An arc in this circle has a central angle of 48°

storchak [24]

Answer:

$\frac{8\pi}{5}$

Step-by-step explanation:

Since this is a degree we going to use the arc length formula

$2\pi \times( r)( \frac{x}{360)}$

where x is the central angle measure and r is the radius.

The radius is 6 and the central angle is 48 so let plug that in the formula

$2\pi \times (6)( \frac{48}{360} )$

Multiply 2 pi by 6

$12\pi \times ( \frac{48}{360} )$

$12\pi \times \frac{4}{30}$

$\frac{12\pi}{1} \times \frac{4}{30} = \frac{48\pi}{30}$

$\frac{8\pi}{5}$

8 0

2 years ago