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klio [65]
3 years ago
15

When Henry surveyed 45 seventh-grade students at random in the school cafeteria, he found that 3 out of 15 liked reggae music. U

sing proportional reasoning, about how many of the 180 seventh-grade students in his school like reggae?
Mathematics
1 answer:
xxMikexx [17]3 years ago
4 0
3                       x
---------= --------- ---------
15                 180

15x=540
-----   ------= 36 students. 
15       15

Steps: Cross multiply to get 15x and 540. Divide both numbers by 15, then you found what x equals, which is the answer. 
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blondinia [14]

The equation of a circle with center (x_0,y_0) and radius r is

(x-x_0)^2+(y-y_0)^2=r^2

In your case,

x_0=3,\quad y_0=-2,\quad r=3

Plug these values into the generic formula and you'll get your equation.

5 0
3 years ago
Find the dimensions of the cube,<br> Volume = 64 in
Ksivusya [100]

Answer:

4 in

Step-by-step explanation:

volume = 64 in³

side = cubic root of 64 in³

side = 4 in

Check: If a cube has side 4 in, then its volume is 4 in × 4 in × 4 in = 64 in³.

This shows that the answer 4 in is correct.

4 0
2 years ago
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poizon [28]
Factor 5 de 5t - 5
5(t - 1)

¡Espero que esto ayude! :)
6 0
3 years ago
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oksano4ka [1.4K]
36x2(for the total amount of yarn for the width) would be 72. 112-72=40. Since it is a rectangle and the width should both be the same size, the length should be 20 inches. (20+20+36+36=112, so 20 inches is the correct answer.
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3 years ago
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RideAnS [48]
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She actually spent $711, her forecast was off target by (600-7111) $111.

She exceeded her budget by $111
5 0
3 years ago
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