Question 10 qrst is a parallelogram. find a. parallelogram qrst with side qt measuring 3 a plus 7 and rs measuring 4 a 15 12 7 9

a = 7

Explanation:

We are given that the figure is a parallelogram.

In a parallelogram, each two opposite sides are equal.

This means that:

QT = RS

We are also given that:

QT = 3a + 7 and RS = 4a

Equating the two values, we will be able to solve for "a" as follows:

QT = RS

3a + 7 = 4a

4a - 3a = 7

a = 7

Hope this helps :)

a. she will receive a refund of $278.

step-by-step explanation:

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.