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2 years ago

Which of the expressions below are equal to 5x + 20y? Select all that apply.

Mathematics

2 answers:

xeze [42]2 years ago

8 0

The correct answers are A and B.
Hope this helps!

olga_2 [115]2 years ago

3 0

A & B are the correct answers

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4x – 3y=8<br> 2. 5x – 2y = -11

AlladinOne [14]

Answer:

$x = -7$

$y = - 12$

Step-by-step explanation:

The given system is:

4x-3y=8

5x-2y=-11

We make x the subject in the top equation to get:

$x = \frac{3}{4}y + 2$

Plug this expression for x in the bottom equation to get

$5( \frac{3}{4}y + 2) - 2y= - 11$

We expand to obtain

$\frac{15}{4} y + 10 - 2y = - 11$

Multiply through by 4

$15y + 40 - 8y = - 44$

Group similar terms

$15y - 8y = - 44 - 40$

$7y = - 84$

$y = - \frac{84}{7} =-12$

This means

$x = -12\times \frac{3}{4} + 2$

$x = - 7$

6 0

3 years ago

Given the data presented in the bar graph, which age group represents 25% of the people at the family reunion? A) 10−19 B) 20−29

Dmitriy789 [7]

Answer:

Step-by-step explanation:

First you find the amount of people at the reunion which was 80. Then you find 25% of 80. 25% of 80 is 20. The only age group with 20 people is the 20-29 year olds.

4 0

2 years ago

Read 2 more answers

N + 5 ≥ 25

Triss [41]

The answer is A. Subtract the five on both sides and you end up with A :)

4 0

3 years ago

Help I need to know I only have 15 min <br> What does x equal in x/2=-5

SSSSS [86.1K]

Answer:

x= -10

Step-by-step explanation:

Brainliest please? :)

3 0

3 years ago

Find the equation of the line passing through the points (3,-2) and (3, 4).The answer is x = 3. I'm just wondering how my textbo

Leviafan [203]

Given two points. we can find the equation of a line passing through the points

The formula to be used is:

$\frac{y_2-y_1}{x_2-x_!}=\frac{y-y_1}{x-x_!}$

where

$x_1=3,y_!=-2,x_2=3,y_2=4$ $\frac{4-(-2)}{3-3}=\frac{y-(-2)}{x-3}$

$\frac{6}{0}=\frac{y+2}{x-3}$

The next step is to cross multiply

$6(x-3)=0(y+2)$

$6(x-3)=0$

Divide both sides by 6 and make x the subject

x=3

3 0

9 months ago