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sergejj [24]
3 years ago
6

The number of students at a high school was decreased by 30% to 420 after the senior students graduated how many students were a

t the high school before the decrease
Mathematics
1 answer:
olchik [2.2K]3 years ago
5 0

Answer:

Step-by-step explanation:

s(1-30/100)=420

s(100-30)/100=420

s(70/100)=420

s(7/10)=420

7s=4200

s=600

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A quadrilateral has two angles that measure 222° and 81°. The other two angles are in a ratio of 6:13. What are the measures of
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\sf\huge\underline{\star Solution:-}

\rightarrow <u>Ratio of two angles are 6:13.</u>

So, let the one angle be \sf{6x} and another be \sf{13x.}

As we know that,

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So let's sum up the given angles,

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So, First angle \sf{= \:6x\: = \:6×3 \:=} \sf\purple{18°.}

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_________________________________

Hope it helps you:)

3 0
2 years ago
|
dedylja [7]
Right there 125677 on the left you go 4 ahhbsn

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