r + s = -12 so r = -s - 12
4r - 6s = 12

substitute r = -s - 12 into 4r - 6s = 12

4r - 6s = 12
4(-s - 12) - 6s = 12
-4s - 48 -6s = 12
-10s = 60
s = -6

r = -(-6) - 12
r = 6 - 12
r = -6

answer
B -6,-6

6 0

3 years ago

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PLEASE HELP 5 STAR + BRAINLY IF RIGHT!

Sever21 [200]

Right your ratio of $\frac{8}{12}$
Simplify fraction to 3/4
Now set it up with c/100 to find the percent (c equaling the percentage of caremel brownies)

Cross multiplty:
$\frac{2}{3} \frac{c}{100}$

Crossmultiply:
3c = 200
Divide (solve equation)

c = 66.6666666667

7 0

3 years ago

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The number of people who attended a concert on Friday was 3/4 the number of people who attended the same concert on Saturday. A

LiRa [457]

On Saturday, 4/4 of the amount of people attended. On Friday, 3/4 of the amount on Saturday attended. We have 7 parts (3 from Friday and 4 from Saturday).

840/7 = 120.

Thus, 360 people attend on Friday and 480 on Saturday.

8 0

3 years ago