The mistake is the step 2. You need to divide both sides by 9, not multiply both sides by 9
Answer:
7x-3<30
Step-by-step explanation:
7 times a number = 7x
is decreased by 3 = -3
the result is less than 30 = <30
Answer:
{4 + 2√3, 4 - 2√3} thus the solution is A. x = 4 + 2 sqrt(3) or x = 4 - 2 sqrt(3)
Step-by-step explanation:
Solve for x over the real numbers:
(x - 4)^2 = 12
Take the square root of both sides:
x - 4 = 2 sqrt(3) or x - 4 = -2 sqrt(3)
Add 4 to both sides:
x = 4 + 2 sqrt(3) or x - 4 = -2 sqrt(3)
Add 4 to both sides:
Answer: x = 4 + 2 sqrt(3) or x = 4 - 2 sqrt(3)
Answer:
C) 5
Step-by-step explanation:
As the horizontal lines are parallel, the ratio of the segments will be constant.
3/(3 + 4) = (x - 1)/14
3(14) = 7(x - 1)
42 = 7x - 7
7x = 35
x = 5
Answer:
A- -4/7
B- 2/7
C- 1