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blondinia [14]
3 years ago
10

I need help on 15 and 16

Mathematics
1 answer:
Luden [163]3 years ago
3 0

Answer:

15.C

16.H

Step-by-step explanation:

15.

(3×10^8)/(3.4×10²)=(300×10^6)/(34×10)=9×10^5

16.

y²=64

y²-64=0

(y-8)(y+8)=0

y=8 or -8

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