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Sav [38]
3 years ago
8

A car is traveling at 60 kilometers per hour. How many kilometers does the car cover in 7 hours?

Mathematics
2 answers:
IgorC [24]3 years ago
6 0
That would be 420 kilometers in total
Zepler [3.9K]3 years ago
3 0

Answer:

<em>t</em><em>h</em><em>e</em><em> </em><em>a</em><em>n</em><em>s</em><em>w</em><em>e</em><em>r</em><em> </em><em>i</em><em>s</em><em> </em><em>4</em><em>2</em><em>0</em><em>k</em><em>m</em><em>.</em>

Step-by-step explanation:

<em><u>G</u></em><em><u>i</u></em><em><u>v</u></em><em><u>e</u></em><em><u>n</u></em><em><u> </u></em><em><u>s</u></em><em><u>p</u></em><em><u>e</u></em><em><u>e</u></em><em><u>d</u></em><em><u> </u></em><em><u>o</u></em><em><u>f</u></em><em><u> </u></em><em><u>c</u></em><em><u>a</u></em><em><u>r</u></em><em><u> </u></em><em><u>=</u></em><em><u>6</u></em><em><u>0</u></em><em><u>k</u></em><em><u>m</u></em><em><u>/</u></em><em><u>h</u></em><em><u>r</u></em>

<em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u>n</u></em><em><u>,</u></em><em><u>d</u></em><em><u>i</u></em><em><u>s</u></em><em><u>t</u></em><em><u>a</u></em><em><u>n</u></em><em><u>c</u></em><em><u>e</u></em><em><u> </u></em><em><u>t</u></em><em><u>r</u></em><em><u>a</u></em><em><u>v</u></em><em><u>e</u></em><em><u>l</u></em><em><u>l</u></em><em><u>e</u></em><em><u>d</u></em><em><u> </u></em><em><u> </u></em><em><u>i</u></em><em><u>n</u></em><em><u> </u></em><em><u>7</u></em><em><u>h</u></em><em><u>o</u></em><em><u>u</u></em><em><u>r</u></em><em><u>s</u></em>

<em><u>=</u></em><em><u>s</u></em><em><u>p</u></em><em><u>e</u></em><em><u>e</u></em><em><u>d</u></em><em><u>×</u></em><em><u>t</u></em><em><u>i</u></em><em><u>m</u></em><em><u>e</u></em>

<em><u>=</u></em><em><u>6</u></em><em><u>0</u></em><em><u>×</u></em><em><u>7</u></em><em><u>=</u></em><em><u>4</u></em><em><u>2</u></em><em><u>0</u></em>

<em><u>=</u></em><em><u>d</u></em><em><u>i</u></em><em><u>s</u></em><em><u>t</u></em><em><u>a</u></em><em><u>n</u></em><em><u>c</u></em><em><u>e</u></em><em><u> </u></em><em><u>4</u></em><em><u>2</u></em><em><u>0</u></em><em><u> </u></em><em><u>k</u></em><em><u>m</u></em><em><u>.</u></em>

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Answer:

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Step-by-step explanation:

Let p = the cost of a pack of pencils

and b = the cost of a binder

Then we have two simultaneous equations.

(1)  2p + 3b  = 21.00

(2) 5p + 2b = 25.00

1. Multiply each equation by numbers to give one of the variables the same coefficient.

Multiply (1) by 2 and (2) by 3.This gives

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2. Subtract (3) from (4)

This gives

(5) 11p = 33.00

3. Solve equation (5) for p

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Each pack of pencils costs $3.00.

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