-3y = x...so we sub in -3y for x in the other equation

-x + 7y = 70
-(-3y) + 7y = 70
3y + 7y = 70
10y = 70
y = 70/10
y = 7

so we sub in 7 for y in either of the original equations to find x
-3y = x
-3(7) = x
-21 = x

so ur solution is (-21,7)

6 0

2 years ago

Suzie bought a sweater at the sale price of $25. the original cost of the sweater was $40. what percent represents the discount

Zolol [24]

40-25=$15.00
15.00÷40.00=.375
.375×100=37.5%

3 0

2 years ago

An automobile saleswoman earns 12% on all of her sales. Last month, she sold 3 cars for a total sales amount of $28,950. What is

snow_tiger [21]

Answer:

3474

Step-by-step explanation:

28,950/100=289.5 289.5*12=3474

7 0

3 years ago

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