swaise3300
12.02.2020 •
Mathematics
What is ---
8x + 2y = 30
7x + 2y = 24
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Ответ:
x = 6 y = -9
Step-by-step explanation:
8x +2y = 30
-7x + 2y =24
x= 6
8(6)
48 + 2y =30
-48. -48
2y = -18
÷2. ÷2
y = -9
Ответ:
If Anna drove 360 miles In 8 hours you would divide the two.
360/8
Annas average speed was 45 mph.