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3 years ago

Whats the value of x?

Mathematics

2 answers:

sukhopar [10]3 years ago

7 0

Answer:

is it 80?

Step-by-step explanation:

GenaCL600 [577]3 years ago

6 0

The sum of interior angles in a triangle is always 180°.

So...

30+70+x=180

100+x=180

x=80°

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SVEN [57.7K]

Answer:

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Step-by-step explanation:

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3 years ago

Expand the binomial<br> <img src="https://tex.z-dn.net/?f=%28x-%5Cfrac%7B2%7D%7B5%7D%29%5E%7B2%7D" id="TexFormula1" title="(x-\f

kkurt [141]

Answer:

$(x- \frac{2}{5})^{2} = x^2 -\frac{4}{5}x + \frac{4}{25}$

Step-by-step explanation:

You have two methods to expand this binomial.

Method 1

If you have the expression:

$(x- \frac{2}{5})^{2}$

You can write the expression it in the following way:

$(x-\frac{2}{5})^{2}=(x-\frac{2}{5})(x-\frac{2}{5})$

Then, apply the distributive property:

$(x-\frac{2}{5})(x-\frac{2}{5}) = x^2 -\frac{2}{5}x -\frac{2}{5}x+ (\frac{2}{5})\frac{2}{5}$

Simplify the expression:

$(x-\frac{2}{5})^2= x^2 -\frac{4}{5}x+ (\frac{4}{25})$

---------------------------------------------------------------------------------------

Method 2

For any expression of the form:

$(a-b)^2$

Its expanded form will be:

$(a-b)^2= a^2 -2ab + b^2$

$a = x$

$b =\frac{2}{5}$

$(x- \frac{2}{5})^{2} = x^2 - 2x\frac{2}{5} + (\frac{2}{5})^2$

$(x- \frac{2}{5})^{2} = x^2 -\frac{4}{5}x + \frac{4}{25}$

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3 years ago

X^2 + y^2 =-6x-14-6y

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Answer:

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Step-by-step explanation:

thats if your solving for x if not to math w l ay

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

A student writes an incorrect step while checking if the sum of the measures of the two remote interior angles of triangle ABC b

mihalych1998 [28]

Answer: The first option

Step-by-step explanation:

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2 years ago