Answer:
Firstly, rewrite the equation:
⅓ (18 + 27) = 81
Substitute x for the given number of it's supposed equivalent.
In this case x = 12.
⅓ (18(12) + 27) = 81
Solve using PEMDAS and simplify what is in the parenthesis first. Then, multiply.
(18 x 12) + 27 = 243
Now, solving using PEMDAS, multiply the total of what you got that was originally in the parenthesis by ⅓ .
⅓ (243) = 81
When you multiple these number they are equivalent to 81.
81 = 81
Since the equation given, when substituted x for 12, is equivalent to 81, this proves that substituting x for 12 makes this equation true.
Answer:
1. 30x + 20
2. -10x + 60
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
In this problem we have points of the form (x^0,y^0) cama Y0 what we must do is replace it of appointing a function Y = 3^x replace x^0 with x and y^0 with 1. The point belongs to the function only if the right side of the equality is equal to the left side
20 = 5(-3 + x) Multiply 5 into (-3 + x)
20 = -15 + 5x Add 15 on both sides
35 = 5x Divide by 5 on both sides to get x by itself
7 = x
20 = 5(-3 + x) Divide 5 on both sides
4 = -3 + x Add 3 on both sides to get x by itself
7 = x
