The ratio of the number of boys to the number of girls in the class is 5: 7. if there are 600 students, how many girls are there?

There are 350 girls

Step-by-step explanation:

boys: girls: total

5            7     5+7

5           7        12

We can use proportions to solve this.  Put the number of girls over the total number.

girls            7 girls      x girls

= =

total            12total     600 total

Using cross products

7 * 600 = x*12

Divide each side by 12

7*600/12 = x

350 = x

There are 350 girls

26?

step-by-step explanation:

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3