40 miles per hour because 140 divided by 3.5 is 40.
Answer:
B
Step-by-step explanation:
Simplify n + -2 to n - 2
(n - 2)(n + 4) = 27
Expand
n^2 + 4n - 2n - 8 = 27
Simplify n^2 + 4n - 2n - 8 to n^2 + 2n - 8
n^2 + 2n - 8 = 27
Move all terms to one side
n^2 + 2n - 8 - 27 = 0
Simplify n^2 + 2n - 8 - 27 to n^2 + 2n - 35
n^2 + 2n - 35 = 0
Factor n^2 + 2n - 35
(n - 5)(n + 7) = 0
Solve for n
<u>n = 5, -7</u>
Answer:
21
Step-by-step explanation:
24.50 / 3 = 49/6
A. it takes the robot 36 minutes to complete one task.
b. the robot can do one task and a half in one hour.
