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3 years ago

14

Will give u brainlist

1 answer:

dusya [7]3 years ago

5 0

The value of x equals 30.

Step by Step explanation:

All sides are equal so you know the angle lengths are equal. When you multiple 2x by 3 you get 6x. All angles of a triangle add up to 180 so you divide 180 by 6 and you get 30. Hope This Helps!

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Polygon ABCD has the following vertices: A(-4,2) , B(3,2) , C(3,-5) , and D (-4, -2) Calculate the area of the polygon

Lynna [10]

Check the picture below.

$\bf \textit{area of a trapezoid}\\\\A=\cfrac{h(a+b)}{2}~~\begin{cases}a,b=\stackrel{bases}{parallel}\\\qquad ~sides\\h=height\\\cline{1-1}a=4\\b=7\\h=7\end{cases}\implies A=\cfrac{7(4+7)}{2}\implies A=\cfrac{7(11)}{2}\\\\\\A=\cfrac{77}{2}\implies A=38\frac{1}{2}$

4 0

3 years ago

Divide the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending power

lana66690 [7]

After dividing the polynomials, the answer is 2x-8

8 0

3 years ago

Help please guys is this right?

andrey2020 [161]

Answer: Correct, are you dragging the line across?

3 0

3 years ago

Please help me and include step by step!!!<br> (x+9)(x-9) Polynomial identities

WITCHER [35]

Answer:

The given expression is simplified as $(x + 9)(x -9) = x^{2} - 81$

Step-by-step explanation:

Here,the given expression is (x+9)(x -9)

Using the ALGEBRAIC IDENTITY:

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

Now, here in the given expression (x + 9)(x -9)

Comparing it the left side of the identity,

we get a = x

and b = 9

The right side of the equation is $a^{2} - b^{2}$

Substituting the value of a and b, we get

⇒ $(x + 9)(x -9) = (x)^{2} - (9)^{2}$

= $x^{2} - 81$

Hence, the given expression is simplified as $(x + 9)(x -9) = x^{2} - 81$

4 0

3 years ago

Helps pls I rlly don’t know ?

Diano4ka-milaya [45]

Answer:

it's easy u stupido perra

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers