What is the solution to this system of linear equations?

12q + 3r = 15

–4q – 4r = –44

 The required solution is (q, r) = (-2, 13).

Step-by-step explanation:  We are given to find the solution to the following system of linear equations :

We will be solving the given system of equations by the method of ELIMINATION.

Multiplying equation (ii) by 3, we have

Adding equations (i) and (iii), we get

Substituting the value of r in equation (i), we get

Thus, the required solution is (q, r) = (-2, 13).

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²