What does 3(13-2a)=-3+a =????

2 answers:

7 0

Again, Jjmarie, please do not ask questions about equations in this format. Your job is to SOLVE <span>3(13-2a)=-3+a, not to find out "what it equals."

"Solve" means "find the value of a that satisfies the given equation."

</span><span>3(13-2a)=-3+a, when multiplied out, is 39 - 6a = -3 + a

Combining like terms: -7a = -42, or a = 6. See? a equals 6; the equation does not equal 6. You could say, however, that "</span><span>3(13-2a)=-3+a" is TRUE when a = 6. It's a conditional statement.</span>

kirza4 [7]2 years ago

3 0

3(13-2a)=-3+a
39-6a=-3+a
42=7a
a=6

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Three-fifths of the students in a room are girls. One-third of the girls have blond hair. One-half of the boys have brown hair.

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Answer:

a. Of all the students, $\frac{1}{5}$ are girls with blond hair.

b. Of all the students, $\frac{1}{5}$ are boys without brown hair.

Step-by-step explanation:

a. You know that $\frac{3}{5}$ of the students are girls (This means that $\frac{2}{5}$ of the studes are boys) and $\frac{1}{3}$ of these girls have blond hair.