The first few steps in solving the quadratic equation 9x2 + 49x = 22 − 5x by completing the square are shown.
9x2 + 49x = 22 − 5x
9x2 + 54x = 22
9(x2 + 6x) = 22
which is the best step to do next to solve the equation by completing the square?
a. 9(x2 + 6x + 3) = 25
b. 9(x2 + 6x + 3) = 49
c. 9(x2 + 6x + 9) = 31
d. 9(x2 + 6x + 9) = 103

For this case we have the following quadratic equation:

We want to solve the square equation.

We then have the following steps:

Step 1:

Step 2:

Step 3:

Complete the square:

the best step to do next to solve the equation by completing the square is:

option D

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6