Simplify .
-$8.7-7.9 \div 2.5 \cdot(4.5-4.7)^{2}$
A) 0.0128
B) 8.5736
C) -70.3
D) 8

Question

Quizplus · Accepted Answer

The correct answer is obtained by following the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right). First, calculate the expression inside the parentheses: $4.5 - 4.7 = -0.2$. Then, square this result: $(-0.2)^2 = 0.04$. Next, perform the division and multiplication in the expression from left to right: $7.9 \div 2.5 = 3.16$ and $3.16 \cdot 0.04 = 0.1264$. Finally, subtract this result from 8.7: $8.7 - 0.1264 = 8.5736$.

Simplify - 8.7−7.9÷2.5⋅(4.5−4.7)28.7-7.9 \div 2.5 \cdot(4.5-4.7)^{2}8.7−7.9÷2.5⋅(4.5−4.7)2 A) 00128 B) 8

Simplify
- $8.7-7.9 \div 2.5 \cdot(4.5-4.7)^{2}$ A) 00128
B) 8