Answer: x2 + 4x + 11
Step-by-step explanation:
(x + 2)2 + 7
(x+2)(x+2) + 7
X2 + 2x + 2x + 4 + 7
x2 + 4x + 11
Answer: 23
4x4=16 ( it represents the four weeks and the four inch growth each week)
Now just do 16+7 which equals to 23
She is saving $24!
explanation: multiply .2 (20%) by 120.
Answer:
20 days
Step-by-step explanation:
t = time required by one worker to complete the job alone
(t+8) = time required by the other worker
So:
7.5/ t + 7.5/ (t + 8) = 1
Solve for t.
...
t = 12 days, the first guy working alone
The other worker would finish the job in 20 days.
Answer: Reject the null hypothesis because the p-value is less than 0.05
Step-by-step explanation:
