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3 years ago

Solve the equation. 3 7 +5 b= 1

Mathematics

1 answer:

DochEvi [55]3 years ago

8 0

Step-by-step explanation:

multiple 8 through the equation

8×3/2+8b=7/4x8

12+8b=14

8b=14-12

8b=2

divide through by 8

b=2/8 or b=1/4

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Step-by-step explanation:

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ruslelena [56]

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<h3><u>Solution:</u></h3>

Given that, Joshua traveled 5 hours from City A to City B

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First he traveled at the constant speed of 40 mi/h, and then at the constant speed of 60 mi/h.

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<em><u>The relation between speed and distance is given as:</u></em>

$\text { distance }=\text { speed } \times \text { time. }$

$\begin{array}{l}{40 \mathrm{mil} / \mathrm{h} \times \mathrm{n} \text { hours }= x \text { miles }} \\\\ {\rightarrow x=40 \mathrm{n} \rightarrow(1)} \\\\ {\text { And } 60 \times(5-\mathrm{n})=260-x \text { miles }}\end{array}$

$\begin{array}{l}{\rightarrow 300-60 n=260-40 n(\text { from }(1))} \\\\ {\rightarrow 60 n-40 n=300-260} \\\\ {\rightarrow 20 n=40} \\\\ {\rightarrow n=2}\end{array}$

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Marta_Voda [28]

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