B) If fuel usage of car is 50 Litres to point B and back, find average rate of fuel usage per hour.

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Ответ:

johannah51

22.03.2020

Mathematics

D. $({ - 8})^{2} - 9 + ( - 7)$ ✅

Step-by-step explanation:

${( - 32 \div4 })^{2} - 9 + ( - 7) \\ \\ = ({ - 8})^{2} - 9 - 7 \\ \\ = 64 - 16 \\ \\ = 48$

Note:-

$\sf\purple{BODMAS\: rule.}$

B = Brackets

O = Orders

D = Division

M = Multiplication

A = Addition

S = Subtraction

$\sf\red{(+\:x\:-)\:=\:-}$

$\sf\red{(-\:x\:-)\:=\:+}$

$\bold{ \green{ \star{ \orange{Mystique35}}}}⋆$

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B) If fuel usage of car is 50 Litres to point B and back, find average rate of fuel usage per hour.​