3 years ago

Help me plz!!!!!!!!!

Mathematics

2 answers:

GrogVix [38]3 years ago

5 0

Answer:

Part A - D:8

Part B - C:140°

<h3>Solving/Reasoning:</h3>

Part A: Vertical angles are always congruent.

Part B: If angles are supplementary, they need to equal 180 when added together. Since we know angle A is 40, we can subtract it from 180 and figure out what is left over that should be angle B.

40+B=180

B=180-40

B=140

ryzh [129]3 years ago

4 0

Answer:

b for 1 and c for 2

Step-by-step explanation:

You might be interested in

A) y = 5x<br><br>B) y = 10x<br><br>C) y = 7.5x<br><br>D) y = 30x

Jet001 [13]

Y=30x is the answer to this

5 0

2 years ago

Solve 4x-4y=-16; x-2y=-12 by using substitution

Diano4ka-milaya [45]

$\left\{\begin{array}{ccc}4x-4y=-16\\x-2y=-12\end{array}\right\\\\\left\{\begin{array}{ccc}4x-4y=-16\\x=2y-12\end{array}\right\\\\substitution:\\\\4(2y-12)-4y=-16\\8y-48-4y=-16\\4y=-16+48\\4y=32\ \ \ \ /:4\\y=8\\\\x=2\cdot8-12=16-12=4\\\\Solution:x=4\ and\ y=8$

6 0

3 years ago

Which statement about the following equation is true?

Leviafan [203]

<span>1. 3x^2-8x+5=5x^2
2x^2+8x-5

Discriminant = 64+40 = 104 > 0
The answer is 2</span>

6 0

4 years ago

Read 2 more answers

This is pre calculus please help !Describe three ways to determine the measure of segment YZ.

Dmitry [639]

(1) Using trigonometric ratios:
$sin(30) = \frac{YZ}{50}$
$YZ = 25$

(2) Using Pythagoras' Theorem:
$cos(30) = \frac{XY}{50}$
$50cos(30) = XY$
$50^{2} - 50^{2}cos^{2}(30) = YZ^{2}$
$2500 - 2500cos^{2}(30) = YZ^{2}$
$YZ = 25$

(3) Using sine rule:
$\frac{50}{sin(90)} = \frac{YZ}{sin(30)}$
$50 = \frac{YZ}{sin(30)}$
$50sin(30) = YZ$
$YZ = 25$

7 0

4 years ago

Read 2 more answers

Simplify 0.44 into a fraction

zmey [24]

The answer would be 11/25

4 0

3 years ago