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patriot [66]
3 years ago
15

Maris has 1,400 minutes to use on her cell phone she has used 45% of her minutes how many minutes has she used

Mathematics
2 answers:
NARA [144]3 years ago
8 0
She has used 630 min

1400*.45=630

.45 is equal to 45%
vaieri [72.5K]3 years ago
7 0
So, we need to find what 45% is first so that we can multiply it from 1400 minutes to get the minutes used. To do this, we must change 45% into a decimal, which is 0.45. Now, you can multiply 1400 by 0.45 to get the total number of minutes used. So, 1400*0.45= 630. She has used 630 minutes. Hope this helped!
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Hey there

Answer:

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Step-by-step explanation:

In this question we are given a <u>number </u><u>that </u><u>is </u><u>4</u><u>0</u><u> </u><u>.</u> And we have asked to find <u>2</u><u>0</u><u>%</u><u> </u><u>of </u><u>it </u><u>.</u>

<u>Solution</u><u> </u><u>:</u><u> </u><u>-</u>

\longmapsto \qquad \: \: 20\% \times 40

We know that ,

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<u>S</u><u>o </u><u>,</u>

<u>\longmapsto \qquad \: \: ( 20 \times  \dfrac{1}{100})  \times 40</u>

<u>or </u><u>,</u>

<u>\longmapsto \qquad \: \:  \dfrac{20}{100}  \times 40</u>

Now cancelling zero :

\longmapsto \qquad \: \:  \dfrac{2 \cancel{0}}{1 \cancel{0} \cancel{0}}  \times 4 \cancel{0}

We get ,

\longmapsto \qquad \: \:  2 \times 4

\longmapsto \qquad \: \:     \blue{\underline{\boxed{\frak{8}}}} \quad \bigstar

  • <u>Therefore</u><u> </u><u>,</u><u> </u><u>2</u><u>0</u><u>%</u><u> </u><u>of </u><u>4</u><u>0</u><u> </u><u>is </u><em><u>8</u></em><em><u> </u></em><em><u>.</u></em>

<h2>#Keep Learning</h2>

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Step-by-step explanation:

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Step-by-step explanation:

As we have 2 of the angles, we can find the third. The measure of the third angle is 45 degrees.

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Now was have two side lengths of 17 in a right triangle, so we can use the Pythagorean theorem to find a.

Recall that the pythagorean theorem states: a^2+b^2=c^2

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Knowing this, we can input our value into this formula and solve for a.

17^2+17^2=a^2\\\\289+289=a^2\\\\a=\sqrt{578} \\\\a=17\sqrt{2}

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