2 years ago

I need help on this question

1 answer:

tatiyna2 years ago

6 0

It is a right agn have a good day

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uysha [10]

Answer: 2 pounds

Step-by-step explanation: hope this helps:)

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monitta

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laila [671]

Hello,

8/(x-7)=7/2
==>(x-7)*7=8*2
==>7x-49=16
==>7x=65
==> x =9+2/7

Answser A

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2 years ago

Alecsey [184]

If you covert it to 18/30 then it is much simpler yet if you still need help then read on

4/30

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3 years ago

True [87]

First

angle in front of c is 30°, so hypotenuse is equal to 2c

it's right triangle, so let's use Pythagorean theorem\

$(2c)^2=c^2+4^2\\4c^2=c^2+16\\3c^2=16\\\\c^2=\dfrac{16}{3} \\\\c=\dfrac{4}{\sqrt{3} } =\dfrac{4\sqrt{3} }{3 }$

Second

b - the base of the triangle, angles at the base are equal ⇒ cathets are equal

it's right triangle, so let's use Pythagorean theorem

$b^2=7^2+7^2\\b^2=49+49\\b=\sqrt{2\times49} =7\sqrt{2}$

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2 years ago