Answer:
Kay sold 67 cell phones and Allen sold 50 cell phones.
Step-by-step explanation:
Let k = # cell phones Kay sold and a = # cell phones Allen sold.
k + a = 117
k = 17 + a
So:
(17 + a) + a = 117
2a = 100
a = 50
Plug this back into 2nd equation:
k = 17 + a
k = 17 + 50
k = 67
Kay sold 67 cell phones and Allen sold 50 cell phones.
You mean (7mn)^2, if so...
(7*3*-2)^2
-42^2=1764
l = 7.5 * 10^-6
3l = 3* (7.5* 10^-6)
= 22.5 * 10^-6
000022.5 * 10^-6
move the decimal 6 places to the left
.0000225 meters
Answer: .0000225 meters
