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Reptile [31]
4 years ago
8

there are 750 students in class 7 and 625 students in class 8 what percent is class 7 of the class 8?

Mathematics
1 answer:
Leno4ka [110]4 years ago
6 0
750 is ?% of 625

<em>Y = ?% * X</em>

Solving our equation for ?
?% = Y/X
?% = 750/625
? = 1.2

Convert decimal to percent:
<span>?% = 1.2 * 100 = 120%
</span>
Class 8 is 120% of Class 7.

If you want the percent of Class 8 to Class 7, it is:
 625 is ?% of 750

<em> = ?% * X</em>

Solving the equation for ?
?% = Y/X
?% = 625/750
? = 0.8333

Convert decimal to percent:
<span>?% = 0.8333 * 100 = 83.33%

</span>Class 7 is 83.33% of Class 8.

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Which set of ordered pairs could be generated by an exponential function ?
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b. Sixty-five pounds of candy was divided into four different boxes. The second box contained twice the amount of the first box.
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<u>Step-by-step explanation:</u>

Here we have , Sixty-five pounds of candy was divided into four different boxes. The second box contained twice the amount of the first box. The third box contained two more pounds than the first box. The last box contained one-fourth the amount in the second box. We need to find How much candy was in each box. Let's find out:

We have a total of 65 pounds of candy ! Let in first box we have x pounds so , second box contained twice the amount of the first box i.e.

⇒ 2x

The third box contained two more pounds than the first box i.e.

⇒ x+2

The last box contained one-fourth the amount in the second box i.e.

⇒ (\frac{1}{4})2x = \frac{x}{4}

Therefore , Sum of pounds of candy are :

⇒ \frac{x}{2} +x+2+2x+x=65

⇒ \frac{x}{2} +4x=63

⇒ \frac{9x}{2}=63

⇒ x=63(\frac{2}{9} )

⇒ x=14

Therefore , Candy in each box is :

First box = 14 pounds

Second box = 2x = 28 pounds

Third Box = x+2= 16 pounds

Fourth box = x/2 = 7 pounds

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