Answer:This law of exponents can only be used when the bases are equal.
Step-by-step. explanation:
C. 11.8 ( remember a2+b2=C2 )
Answer: The average age is 7.1 years.
This problem is an example of when we need to take a weighted average. We simply can't just find the average of 5 and 8, because there are different children of each each.
To start, lets multiply the total number of children by their individual ages.
6 x 5 = 30 years
14 x 8 = 112 years
There are 142 years among the 20 years, so divide 142 by 20. This gives us an average age of 7.1 years.
Answer: -2(5) over -1(6)
Step-by-step explanation:
1. X^2 - 3x - 10
X + 2 = 0 ⇒ −2
X1 = X − 5 = 0 ⇒ X2 = 5
2. X^2 - 5x - 6
X + 1 = 0 ⇒ X1 = −1
X − 6 = 0 ⇒ X2 = 6
