Answer:
r = - 7, r = - 5
Step-by-step explanation:
Given
r² = - 12r - 35 ( add 12r to both sides )
r² + 12r = - 35
To complete the square
add ( half the coefficient of the r- term )² to both sides
r² + 2(6)r + 36 = - 35 + 36
(r + 6)² = 1 ← take the square root of both sides )
r + 6 = ± 1 ( subtract 6 from both sides )
r = - 6 ± 1, thus
r = - 6 - 1 = - 7 or r = - 6 + 1 = - 5
Answer:
k=4
Step-by-step explanation:
Answer:
Nancy fits the equation.
Step-by-step explanation:
I think they're asking which gorilla fits the equation.
2b - 15 = 605
<em>Add 15 to both sides</em>
2b=620
<em>Divide both sides by 2</em>
b=310
The only gorilla who weighs 310 pounds is Nancy.
50 + 52 + 54 = 156
The smallest one is 50 .
