Answer:
x = 3
Step-by-step explanation:
9x - 5 = 22
Add 5 to both sides
9x = 27
Divide both sides by 9
x = 3
Answer:
tankyou
Step-by-step explanation:
thankyou you to
For number 2 the correct answer is 3, number 3 the correct answer is 1/8, for number 7 the correct answer is 8/63, for number 4 the correct answer is 2/15, and the correct answer for number 8 is 25/78. If you want to see the steps done you can download Photomath. It is very helpful. Glad I could help!
Answer: 50
Step-by-step explanation:
I am rounding it to 1 significant figure.
9.8 = 10 (round up when the last digit is 5, 6, 7, 8 or 9)
5.2 = 5 (round down when the last digit end with 0, 2, 3 or 4)
So it now is 10 x 5 = 50
We are given the equation:
c = 500 + 1100 x – 100 x^2
Solve for x given the value of c = 2300
Rearrange and substitute:
- 100 x^2 + 1100 x + 500 = 2300
Divide everything by -100:
x^2 – 11 x – 5 = - 23
x^2 – 11 x = - 18
Completing the square:
(x – 11/2)^2 = - 18 + (11/2)^2
x – 11/2 = ±3.5
x = 2, 9
<span>So x is 2 or 9</span>