Answer:
![\boxed{\mathrm{Option \ C}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cmathrm%7BOption%20%5C%20C%7D%7D)
Step-by-step explanation:
=> ![x^2+22x = 31](https://tex.z-dn.net/?f=x%5E2%2B22x%20%3D%2031)
=> ![(x)^2+2(x)(11) = 31](https://tex.z-dn.net/?f=%28x%29%5E2%2B2%28x%29%2811%29%20%3D%2031)
Since b = 11 , So
needs to be added to both sides
Adding
to both sides
=> ![(x)^2+2(x)(11)+(11)^2 = 31+(11)^2](https://tex.z-dn.net/?f=%28x%29%5E2%2B2%28x%29%2811%29%2B%2811%29%5E2%20%3D%2031%2B%2811%29%5E2)
Completing the square
=> ![(x+11)^2 = 31+121](https://tex.z-dn.net/?f=%28x%2B11%29%5E2%20%3D%2031%2B121)
=> ![(x+11)^2 = 152](https://tex.z-dn.net/?f=%28x%2B11%29%5E2%20%3D%20152)
Answer:
Step-by-step explanation:
<u>Area of the trapezoid:</u>
<u>Substitute the base and height values:</u>
- A = 1/2(6 + 10)*2 = 16 ft²
<u>Total cost of lamination:</u>
Suppose that all work that has to be done is 1. Then:
- One crew can do this work in 10 hours. This means that they will do
per hour. - Another crew can do this work in 14 hours.This means that they will do
per hour. - Both crews together will do
per hour.
If together they can do
per hour, then for all work they will spend
hours or 5 hours 50 minutes.
Answer: 5 hours 50 minutes.
U={2,3,5,7,11,13,17,19} A={3,7,13,19} find A
Lady_Fox [76]
I believe A=+3 because you add 3 each time