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3 years ago

Sorry if l’m posting so many photo but l really just need help for my math class homework

Mathematics

2 answers:

Finger [1]3 years ago

8 0

We have 2 angles that are supplementary, so their sum equals 180⁰.

(4x - 10) + (7x - 8) =180

11x - 18 = 180

11x = 198

x = 18

andrew-mc [135]3 years ago

5 0

Assuming you want the value of x:

The angles are on a straight line which means they must add up to 180 degrees. Make this into an equation.

(4x - 10) + (7x - 8) = 180

Combine like terms.

11x - 18 = 180

Add 18 to both sides.

11x = 198

Divide both sides by 11.

x = 18

If you want the measurements of the angles, plug x into the angles.

4x - 10 ⇒ 4(18) - 10 = 62°

7x - 8 ⇒ 7(18) - 8 = 118°

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2. Three points of a parallelogram are (4, 3), (-4, 3), and (2, 3). Find the coordinates of the 4th point to complete the parall

antiseptic1488 [7]

Parallelograms have equal and parallel opposite sides

The coordinates of the 4th point is (-2,3)

Let the parallelogram be ABCD, such that:

$A = (4,3)$

$B =(-4,3)$

$C = (2,3)$

A and B have the same y-coordinates, while their x-coordinates are additive inverse

This means that:

The y-coordinates of point C and point D will be the same, while their x-coordinates will be additive inverse.

For point C

We have:

$x = 2$

$y = 3$

For point D

The coordinates would be:

$x =- 2$

$y = 3$

Hence, the coordinates of D is (-2,3)

Read more about parallelograms at:

brainly.com/question/9680084

7 0

2 years ago

Please help I need it ASAP

Irina-Kira [14]

Y=2x-1

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4 0

3 years ago

Two friends leave school at the same time Sarah is heading to do North and Beth is heading to West one hour later they are 5 mil

svet-max [94.6K]

5^-4^=25-16=9 root from 9 is 3 so it’s c) 3 miles

7 0

2 years ago

This last one I need help on too

ExtremeBDS [4]

Answer:

$x=\frac{3}{4}+i\frac{\sqrt{7}}{4},\:x=\frac{3}{4}-i\frac{\sqrt{7}}{4}$

Step-by-step explanation:

simplify $\frac{-3}{x-2}$ by putting the negative sign on the outside. $\frac{2x}{x-1}-\frac{2x-5}{x^2-3x+2}=-\frac{3}{x-2}$

find the LCM of the denominators. It is (x-1)(x-2). Multiply by the LCM:

$\frac{2x}{x-1}\left(x-1\right)\left(x-2\right)-\frac{2x-5}{x^2-3x+2}\left(x-1\right)\left(x-2\right)=-\frac{3}{x-2}\left(x-1\right)\left(x-2\right)$

Simplify:

$2x\left(x-2\right)-\left(2x-5\right)=-3\left(x-1\right)$

solve: $x=\frac{3}{4}+i\frac{\sqrt{7}}{4},\:x=\frac{3}{4}-i\frac{\sqrt{7}}{4}$

3 0

2 years ago

What is 13 10/15 in the lowest terms?

olga55 [171]

The answer is below:

$13\frac{2}{3}$

5 0

3 years ago