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Elanso [62]
3 years ago
9

Does exposure to classical music (through instrument lessons or concert attendance) improve children's scholastic performance? I

n a study, researchers measured the amount of exposure to classical music for many children, along with their scores on the state's academic proficiency exam. The explanatory variable in this study is:
Mathematics
1 answer:
Anestetic [448]3 years ago
6 0
The explanatory variable is the amount of exposure the student is given to classical music.
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For x= 2, what is the value of the expression in the box? The expression is 3.6 divided by x A. 1.6 B.18 C.0.18 D.1.8
Ostrovityanka [42]

Answer:

please give me brainiest

Step-by-step explanation:

algebraic Expressions Calculator. An online algebra calculator simplifies expression for the input you given in the input box. If you feel difficulty in solving some tough algebraic expression, this page will help you to solve the equation in a second.

6 0
2 years ago
Can someone help me with this problem
Naily [24]
<h3>Answer: Choice A</h3><h3>The point Z ' is at (8,4)</h3><h3>The point Y ' is at (0,4)</h3>

=================================================

Explanation:

The key thing here is that point Z does not move. Why not? Because this is where the center of dilation occurs. The center point is fixed. Everything around the center will expand away from, or contract toward, the center.

In this case, the scale factor is 4/5 = 0.8 which is less than 1. So points will contract toward the center. The old pre-image shrinks to make the image smaller.

Note how point Y = (-2,4) is 10 units away from point Z. You can count out the spaces or subtract the x coordinates. Use an absolute value to make sure the result is positive

|x1-x2| =  |-2-8| = |-10| = 10

|x2-x1| = |8-(-2)| = |8+2| = |10| = 10

So 0.8 times this distance is therefore 0.8*10 = 8 meaning that point Y' is going to be 8 units away from point Z' or Z.

Subtract 8 from the x coordinate of point Z to get x-8 = 8-8 = 0.

The y coordinate stays the same at y = 4 the whole time.

----------------------------------------

In short, point Y starts at (-2,4) and moves to (0,4)

Distance from Y to Z is 10 units

Distance from Y' to Z' is 8 units

8/10 = 4/5 = 0.8 is the scale factor

Point Z does not move. So Z and Z' are at the same location.

5 0
3 years ago
Read 2 more answers
Maya paid $11.88 for a 2.38-pound bag of shrimp at one store. The following week, she paid $26.47 for a 5.08-pound bag at anothe
lbvjy [14]

Answer:

2.38 lb bag = 4.99/lb   5.08 lb bag = 5.21/lb  The 2.38 is the better buy

Step-by-step explanation:

11.88/2.38 = 4.99

26.47/5.08 = 5.21

4.99 is cheaper than 5.21 so the 2.38 lb bag is better buy

6 0
2 years ago
a road crew finished building a road.if the crew took 5 5/6 days how many kilometers of the road did they do each day
Leto [7]

Answer:

A construction crew has just finished building a road. The crew worked for 5 5/6 days. how many kilometers long, how many kilometers of road did they build each day? (Assume they built the same amount each day.) hope this helps  ; )

Step-by-step explanation:

4 0
3 years ago
Please help! (Pythagorean theorem stuff)
vova2212 [387]

Answer:

Pretty sure its 6

Step-by-step explanation:

The hypotenuse is double the length of the shortest side

4 0
2 years ago
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