Which of the following equations is equivalent to 9x - 12 =36
A. 9x = 24
B. 9x=48
C x -12=4
D. x + 9=4
My answer is B
Is this correct?
Frank has saved $15 towards the $95 phone he wants to buy. He makes $5 per hour selling water. How many hours must he work until he has enough money for the phone?
Which expression is equivalent to 12 + 24?
Group of answer choices
4(2 + 5)
4(12 + 20)
4(3 + 6)
2(4 + 12)
Which expression is equivalent to 12 + 24?
Group of answer choices
4(2 + 5)
4(12 + 20)
4(3 + 6)
2(4 + 12)
is it B
To determine which equation is equivalent to 9x - 12 = 36, you need to solve for x. Here is the step-by-step process to find the answer:
1. Start with the given equation: 9x - 12 = 36.
2. Add 12 to both sides of the equation to isolate the variable: 9x = 36 + 12 = 48.
3. Divide both sides of the equation by 9 to solve for x: 9x/9 = 48/9.
4. Simplify the equation: x = 5⅓ = 5.33.
Now, let's compare the options with the value of x we found:
A. 9x = 24: Plugging in x = 5.33, this equation becomes 9(5.33) = 24, which is not true.
B. 9x = 48: Plugging in x = 5.33, this equation becomes 9(5.33) = 48, which is true.
C. x - 12 = 4: Plugging in x = 5.33, this equation becomes 5.33 - 12 = 4, which is not true.
D. x + 9 = 4: Plugging in x = 5.33, this equation becomes 5.33 + 9 = 4, which is not true.
So, the equation that is equivalent to 9x - 12 = 36 is B: 9x = 48. Therefore, your answer is correct.