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3 years ago

Write an algebraic expression that represents how many minutes are in "h" hours.

Mathematics

2 answers:

ddd [48]3 years ago

7 0

Hello! Your algebraic expression would be 60h= m
m is total number of minutes. Hope this helps! :)

aniked [119]3 years ago

5 0

('h' hours) x (60 minutes / hour) = 60 'h' minutes

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Step-by-step explanation:

9 is the correct answer.

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3 years ago

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Perpendiculare means the slopes multiply to -1

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The length of a rectangle is the width minus 8 units. The area of the rectangle is 9 units. What is the length, in units, of the

frez [133]

Length of rectangle is 1 unit

<u>Solution: </u>

Given that

Length of a rectangle is width minus 8 units.

Area of rectangle = 9 square units

Need to calculate the length of rectangle.

Let us assume width of rectangle = x

As Length is width minus 8,

Length of the rectangle = x – 8

$\text{ Area of rectangle }=\text{ width of rectangle }\times \text{ Length of the rectangle }$

$\text{ Area of rectangle }= x\times (x-8)$

$\text { Area of rectangle }=\left(x^{2}-8 x\right)$

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$\begin{array}{l}{\Rightarrow x^{2}-8 x=9} \\\\ {\Rightarrow x^{2}-8 x-9=0}\end{array}$

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$\begin{array}{l}{\Rightarrow x^{2}-9 x+x-9=0} \\\\ {\Rightarrow x(x-9)+1(x-9)=0} \\\\ {\Rightarrow (x-9)(x+1)=0}\end{array}$

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As width cannot be negative, so considering x = 9

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