3 years ago

Why when I sum the angles I don't get 180

2 answers:

6 0

You don't have all the numbers, you don't know what X equals, you need to know what X equals in order to complete the equation

babymother [125]3 years ago

3 0

5x+20+7x-80=180
12x-60=180
x=20
I think that's the answer

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Ghella [55]

Answer:

$m=\frac{2A-kn}{k}$

Hence, option C is true.

Step-by-step explanation:

Given the expression

$A=\frac{k}{2}\left(m+n\right)$

Solving for 'm'

$A=\frac{k}{2}\left(m+n\right)$

Flip the equation

$\frac{k}{2}\left(m+n\right)=A$

Expanding by applying the distributive law: $a\left(b+c\right)=ab+ac$

$\frac{1}{2}km+\frac{1}{2}kn=A$

Add (-1)/2 × kn to both sides

$\frac{1}{2}km+\frac{1}{2}kn+\left(-\frac{1}{2}kn\right)=\left(-\frac{1}{2}kn\right)+A$

simplify

$\frac{1}{2}km=-\frac{1}{2}kn+A$

Divide both sides by k/2

$\frac{\frac{1}{2}km}{\frac{k}{2}}=\frac{-\frac{1}{2}kn+A}{\frac{k}{2}}$

$m=\frac{2A-kn}{k}$

Therefore,

$m=\frac{2A-kn}{k}$

Hence, option C is true.

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3 years ago

How do find the circumference of part of a circle

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Circumference of a circle is 2 x pi x r

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If PQ and RS intersect from four right angles which statement is true

Harman [31]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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