Math Problem Statement
From the set {4, 10, 12} use substitution to determine which value of x makes the equation true.
10(x - 3) = 90
Question 2Select one:
a. none of these
b. 12
c. 10
d. 4
Question 3 Not complete Points out of 1.00 Flag question Question text From the set {21, 36, 56} use substitution to determine which value of x makes the equation true.
5(x - 20) = 180
Question 3Select one:
a. 56
b. 36
c. 21
d. none of these
Solution
Let's go step by step to solve both questions.
Question 2:
We have the equation:
We will check each value from the set by substituting them into the equation.
- For :
- For :
- For :
Answer: b. 12
Question 3:
We have the equation:
We will check each value from the set by substituting them into the equation.
- For :
- For :
- For :
Answer: a. 56
Summary of answers:
- Question 2: b. 12
- Question 3: a. 56
Would you like further details on any of these steps, or have any questions? Here's a tip:
Tip: Always simplify the expression inside parentheses first, then apply operations outside the parentheses step by step.
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Math Problem Analysis
Mathematical Concepts
Algebra
Substitution
Linear Equations
Formulas
10(x - 3) = 90
Theorems
Substitution method for solving equations
Suitable Grade Level
Grades 7-9
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