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Questions and Answers
Solve the following equation: $4x + 7 = 31$
Solve the following equation: $4x + 7 = 31$
- $x = 11$
- $x = 9$
- $x = 6$ (correct)
- $x = 8$
Simplify the expression: $(2/3) + (5/6) - (1/2)$
Simplify the expression: $(2/3) + (5/6) - (1/2)$
- $1/2$ (correct)
- $2/3$
- $1/3$
- $1/6$
Which of the following numbers is a prime number
Which of the following numbers is a prime number
- 42
- 31 (correct)
- 27
- 36
Calculate the product of 5.2 and 3.6.
Calculate the product of 5.2 and 3.6.
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Solve the following fraction equation: $(3/4) * x = 9$
Solve the following fraction equation: $(3/4) * x = 9$
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Study Notes
Solving Linear Equations
- To solve the equation $4x + 7 = 31$, subtract 7 from both sides and divide both sides by 4, resulting in $x = 6$.
Simplifying Expressions
- To simplify the expression $(2/3) + (5/6) - (1/2)$, find a common denominator, which is 6, and convert each fraction to have a denominator of 6: $(4/6) + (5/6) - (3/6) = (6/6) = 1$.
Prime Numbers
- A prime number is a positive integer that is divisible only by itself and 1.
- Among the options, the prime number is: 7.
Multiplying Decimals
- To calculate the product of 5.2 and 3.6, multiply the numbers: 5.2 × 3.6 = 18.72.
Solving Fraction Equations
- To solve the equation $(3/4) * x = 9$, multiply both sides by 4/3, resulting in $x = 12$.
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