3 years ago

Can someone explain the elimination method to me

Mathematics

2 answers:

kirza4 [7]3 years ago

8 0

Sorry I dont know that method

aalyn [17]3 years ago

5 0

Eliminate opposite numbers. Then solve!! Hope this helped!!

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a square sandbox has an area of 42 squareft what is the approximate perimeter of the sandbox to the nearest hundredth

Ugo [173]

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3 years ago

The measure of each interior angle of a regular polygon is 157.5 ∘ . How many sides does the polygon have?

uranmaximum [27]

180(n-2)=157.5n

180N-360=157.5n

180N-157.5n=360

22.5N=360

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ankoles [38]

Answer:

Step-by-step explanation:

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Zinaida [17]

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22 percent is the loss ....

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3 years ago

Find b, given that a = 20, angle A = 30°, and angle B = 45° in triangle ABC

Kamila [148]

<span>The side b is opposite to the angle B, applying the law of the sines, we have:

</span> $\frac{a}{sinA} = \frac{b}{sinB}$
$\frac{20}{sin30^0} = \frac{b}{sin45^0}$
$\frac{20}{ \frac{1}{2} } = \frac{b}{ \frac{ \sqrt{2} }{2} }$
$20* \frac{ \sqrt{2} }{2} = b* \frac{1}{2}$
$\frac{20 \sqrt{2} }{2} = \frac{b}{2}$
$2*b =2*20 \sqrt{2}$
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3 years ago

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