Answer:
First answer: "Add the exponents"
Step-by-step explanation:
The laws of exponents include the following for product of exponents with the same base:

which implies addition of exponents
So you need to add exponents
Answer:
55
Step-by-step explanation:
JL = JK + KL
84 = 3x+5 + 6x+7
Combine like terms
84 = 9x +12
Subtract 12 from each side
84-12 = 9x+12-12
72 = 9x
Divide by 9
72/9 = 9x/9
8 =x
We want KL
KL = 6x+7
6*8 +7
48+7
55
Divide both sides by negative two
the answer is x = -1
combine like terms: 38 < x + 10
subtract 10 from both sides: 28 < x
x > 28
Answer:
42.73568802
Step-by-step explanation:
6.973568802×10=69.73568802
69.73568802-27=42.73568802
I used google calculator