Answer:
x = 6
Step-by-step explanation:
First we divide both sides by 3 :
x² = 108 ÷ 3
x² = 36
Now we square root both sides :
x = √36
x = 6
Hope this helped and have a good day
Answer:
B
Step-by-step explanation:
Answer:
Equal to!
Step-by-step explanation:
2 x 1.08 is 2.16
(1.08/100) x 200 = 2.16
2.16 = 2.16
Let the x represent the unknown number.
"2 times a number" is 2x
"The sum of 2 times a number and 11" is 2x + 11
"The sum of 2 times a number and 11 is -7" is 2x + 11 = -7
Now we solve the equation for x to find the unknown number.
2x + 11 = -7
Subtract 11 from both sides.
2x = -18
Divide both sides by 2.
x = -9
Answer: The number is -9.
Check: 2 times -9 = -18
-18 + 11 = -7
The answer is correct.
Step-by-step explanation:
a) 8x + 5x = 13x
b) 9f + 10f - 12f = 7f
hope it helps...
