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4 years ago

Susan ran 5 laps that are each 8/10 mile. How many miles did she run in all?

Mathematics

2 answers:

Levart [38]4 years ago

5 0

8/10 = 0.8
0.8 x 5 =4
4 miles

jeka57 [31]4 years ago

4 0

Answer:

5/1·8/10=4 miles

Step-by-step explanation:

5 laps each 8/10 miles. 5 times 8/10, you turn the 5 into 5/1. 5/1 times 8/10 equals 40/10 which reduced equals 4.

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3 years ago

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Step-by-step explanation:

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$L = 3w --- (1)volume = l \times w \times h \\ \\ 88 = (3w) \times w \times h \\ \\ 3w^2 h= 88 \\ \\ h = \dfrac{88}{3w^2}--- (2) \\ \\$

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$C = 4(l \times w) + 2 ( w \times h) + 2(l \times h) \\ \\ C = 4(3w^2) + 2(w \times \dfrac{88}{3w^2}) + 2(3w \times \dfrac{88}{3w^2}) \\\\ C = 12w^2 + \dfrac{176}{3w} + \dfrac{176}{w}$

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$\dfrac{dC}{dw}= 0 \\ \\ \implies 24 w - \dfrac{176}{3w^2}- \dfrac{176}{w^2}=0 \\ \\ 24 w ^3 = \dfrac{176}{w^2}(\dfrac{1}{3}+1) \\ \\ 24 w ^3 = \dfrac{176(4)}{3} \\ \\ w^3 = \dfrac{88}{3(3)}$

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