Answer:
No solution
Step-by-step explanation:
3(5x+7) = 30 + 15x
DISTRIBUTE
15x+21 = 30+15x
15x-15x = 0
So no solution
Answer:
When two or more separate ratios have the same value.
Answer:
t= 1/2
Step-by-step explanation:
hope this help
Answer:
see explanation
Step-by-step explanation:
using the identity
cos2a = 2cos²a - 1 , then
cos2a
= 2[
(a +
) ]² - 1
= 2 [
(a² +
+ 2) ] - 1
=
(a² +
) + 1 - 1
=
(a² +
) ← thus verified