Answer:
×
Step-by-step explanation:
×
as scientific notation is equal to ×
I=k/d^2
4=k/d^2 and 1=k/64 so if we divide the first by the second we get:
4/1=(k/d^2)/(k/64)
4=(k/d^2)*(64/k)
4=64/d^2
d^2=64/4
d^2=16
d=4 meters
after you subtract the answer is 2x-2y
3x - 13 = 7(x + 2) - 4(x - 7)
3x - 13 = 7x + 14 - 4x + 28
3x - 13 = 3x + 42
3x = 3x + 55
0 = 55
0 ≠ 55
so…
answer: no solution
