The correlation coefficient r between a child’s age, x, and the number of minutes spent doing homework each day, y, is 0.694. What percent of the variation in the number of minutes doing homework cannot be explained by differences in the children’s ages?

Answers

Answer 1

Answer: So, they are looking for the percentage that is NOT explained... Well, given the r we can find the percentage that IS explained by it first. That's given by r^2.

Now - let's take the square of r it gives me .481636. That means that about 48% IS explained. Therefore, the part that cannot be explained must be the missing part (out of 100% so 100% - 48.1636% should be it :)

So 100% - 48.1636% = 0.518364 and we want to round that off to three decimal places which will give us 0.518... and then we could convert that to a percent for the final. So 0.518 as a percentage is 51.8%! s

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HELP HELP HURRY!!!!!Which point is located on ray PQ?

A. point M
B. point N
C. point O
D. point R

diagram shown below...

(((<--------M---------N---------O------P--------Q----------R--------S--------->)))

Answers

Answer:

Point R located on ray PQ.

Step-by-step explanation:

Given : Diagram

To find : Which point is located on ray PQ.

Solution : We have given <--------M---------N---------O------P--------Q----------R--------S--------->.

Ray : A part of a line with a start point but no end point (it goes to infinity).

We can see from the diagram ray PQ start from P but it has no end point.

So , point R ans S located on ray PQ but we have option R

Therefore, D. point R located on ray PQ.

If the entire ray is PQ, then all of those points lie on the ray.

23 means 3 · 2

True or false

Answers

False I'm pretty sure buddy

1. Determine whether the regular hexagon has reflection symmetry, rotation symmetry, both, or neither. If it has reflection symmetry, state the number of axes of symmetry. If it has rotation symmetry, state the angle of rotation. For each type of symmetry, explain how you can tell the figure does or does not have the given symmetry.

Answers

A hexagon is a 6 sided polygon which has a 720° total of internal angles.
A regular hexagon has both reflective and rotation symmetry.
It has 6 rotational symmetries with an angle of 60°.
It has 6 reflection symmetries meaning it has 6 lines of axes.

It is easy to see if there is Reflection symmetry because one half of the whole is the reflection of the other half. In a regular hexagon, you can draw 6 lines across it and still have reflection symmetry.

In Rotational symmetry, the image is rotated around a central point and still looks the same. The regular hexagon is rotated 12 times at an angle of 60°.

A student is trying to solve the set of two equations given below:Equation A: x + z = 6
Equation B: 2x + 4z = 1

Which of the following is a possible step used in eliminating the z-term?

Multiply equation B by 4.
Multiply equation A by 2.
Multiply equation A by –4.
Multiply equation B by 2.

Answers

Hello,
Multiply equation A by –4.
=>-4x-4z=-24
2x+4z=1
------------------
-2x=-23
x=23/2

Answer:

To eliminate the z-term, you need to multiply equation A by -4.

Step-by-step explanation:

Maryanne brought $30 to spend at her favorite farmer's market and craft show. She purchased a t-shirt for $7.50 at the tie-dyed station and now wants to buy some locally grown plants for $2.75 each.

Answers

Answer:

Maryanne spent $30 at the farmer's market and craft show.

To calculate how many locally grown plants Maryanne can buy with her $30, we need to subtract the cost of the tie-dyed t-shirt she purchased earlier.

The cost of the tie-dyed t-shirt was $7.50, so we subtract that amount from $30:

$30 - $7.50 = $22.50

Now we know that Maryanne has $22.50 left to spend on locally grown plants. Since each plant costs $2.75, we can calculate how many plants she can buy by dividing the amount she has left by the cost of each plant:

$22.50 ÷ $2.75 = 8

So, Maryanne can buy 8 locally grown plants with her $30.

Step-by-step explanation:

Final answer:

Maryanne has $30 to spend and she purchased a t-shirt for $7.50. She wants to buy locally grown plants for $2.75 each. Maryanne can buy a maximum of 8 plants.

Explanation:

Maryanne brought $30 to spend at her favorite farmer's market and craft show. She purchased a t-shirt for $7.50 and wants to buy some locally grown plants for $2.75 each.

To calculate how many plants Maryanne can buy, we subtract the cost of the t-shirt from her total budget: $30 - $7.50 = $22.50.

Then, we divide the remaining amount by the cost per plant: $22.50 ÷ $2.75 = 8.18 plants.

Since we can't buy a fraction of a plant, Maryanne can buy a maximum of 8 plants.

Learn more about Calculating Maximum Number of Plants to Buy here:

brainly.com/question/33071979

#SPJ2

Given graph of f(x)=k/x and g(x)=x.T(3.16;3.16) is the point of intersection of f and g. Write down the domain of f

Answers

Hello,

As said T is the point of intersection of f and g, this means that there are only one point and that k=+1.

So dom f= $R ^(+)_0$ (x>0)

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Can anyone please help with this question