-2x-5y=3 3x-8=-6 solve by substition

Answers

Answer 1
Maybe use photo math i guess
Answer 2

Answer:

x = 2/3

y = -13/15

Step-by-step explanation:

3x – 8 = -6

+8 +8

[addition property of equality]

3x = 2

÷3 ÷3

[division property of equality]

x = 2/3 → -2x – 5y = 3

[substitution property]

-2(2/3) – 5y = 3

[distributive property]

-4/3 – 5y = 3

[Create the proportional equivalent of each term so that all terms share the same denominator]

-4/3 – 15y/3 = 9/3

[multiplication property of equality]

3 ( -4/3 – 15y/3 ) = 3 ( 9/3 )

[distributive property]

-4 – 15y = 9

+4 +4

[addition property of equality]

-15y = 13

÷-15 ÷-15

[division property of equality]

y = -13/15


Related Questions

For each of the following, tell whether the expressions are equivalent expressions or not equivalent expressions. TY <3

1. 16b + 7a - c and 7a + (-c) + 16b
Equivalent expressions or not equivalent expressions?

2. 5y + (-4) and 4 + (-5y)
Equivalent expressions or not equivalent expressions?

3. x + x + 3 - y + 2x - 1 + 6y and 4x + 5y + 2
Equivalent expressions or not equivalent expressions?

Answers

Answer:

Step-by-step explanation:

1. equivalent bc 16b+7a-c = 7a+(-c)+16 (+*-) =-

2.not equivalent

3. simpilify:

4x+2+5y

4x+2+5y

equivalent

he northern pike can grow a leangth of abt 1 m. write this length in millimeters and in centimeters

Answers

Answer:

1000 millimeter and 100 in centimeters

Step-by-step explanation:

Answer:

its 1000 millimeters and 100 in centimeters

Kelly paid $45.36 for a sweater that was on sale for 25% off the original price. She paid 8% sales tax on the sale price.
What was the original price of the sweater, in dollars?
(Please explain your answer if you want, I would appreciate and give brainliest if you do so.)

Answers

Take 45.36 *.08 to get the price of the sweater 45.36 *.08 =3.6288 so take 45.36-3.63= 41.73 and take 41.73 *.25 = 10.4325 take 41.73+10.43=52.16 is the original price of the sweater

The original price of the sweater, in dollars is $52.1648.

What is meant by percentage of a value ?

Percentage of a value is defined as the ratio of the value expressed in terms of fraction of 100.

Here,

Percentage of sales tax = 8%

Amount paid as sales tax, P(tax) = 8% of 45.36

P(tax) = 0.08 x 45.36

P(tax) = $3.6288

So, the remaining amount = 45.36 - 3.6288 = $41.7312

Percentage off on the price = 25%

So, the price paid, P' = 0.25 x 41.7312

P' = $10.4328

Therefore,

Original price of the sweater, P = 41.7312 + 10.4328

P = $52.1648

Hence,

The original price of the sweater, in dollars is $52.1648.

To learn more about percentage of a value, click:

https://brainly.com/question/17151247

#SPJ3

heres the second one its the same one as the last one this person just put a link so I cant report it for some reason

Answers

Volume of cylinder:-pi*r2*h
Step-by-step....
pi=3,14
height=39m
diameter=18m so half (r)=9
Now we appy the formula:
pi*r2*h
3.14*9(in square)*39m
3.14*81*39= 9919,2mcube
Hope this help☺️

Please determine the right power rule for each problem (no links!)

Answers

i can only see part of the question can you repost it?!!
I believe the answer is A. I really hope this helps

I really need help on these

Answers

question 3 the volume is 270 (5x6x9=270)
It’s 270 I think ahaha

I need help can you help me pls

Answers

Answer:

1 and 3

Step-by-step explanation:

They are across from each other making them vertical angles.

BRAINLY IF CORRET!! mils wants to save for a new home theater that cost $2150. he earns $20/h as a landscaper and works 40 hours a week and 50 weeks a year. his taxes and deductions average 10% of his gross annual outcome.

Answers

Like 3.3 months i believe

Use the figure. Which is greater, angle mTUR or angle mRUQ? Complete the explanation.

some1 PLEASE ANSWER asap :)

Answers

Answer:

Angle RUQ is greater than angle TUR

Step-by-step explanation:

Angle TUR is a total of 125 degrees and angle RUQ is a total of 145 degrees. You find the measure of RUQ by subtracting 35 degrees from 180 degrees, this will give you the 145 degrees. So angle RUQ is greater than angle TUR by 20.

please help with these questions (no links)

Answers

Answer:

tbh im sorry i dont know :(

Well
7. C=2pie is 6.283185307
8. C=5pie is 15.70796327
9. C=8pis is 25.13274123

Each outer wall of the Pentagon in Washington D.C , measures 921 feet .What is the measure of each angle made by the Pentagon’s outer walls?

Answers

Answer:

921 × 5 = 4605

Step-by-step explanation:

Just Multiply the outer wall measurement(921) times how many walls there are.

Sorry if wrong but hope this helps

Jade uses $30 from her checking account to donate money to her favorite charity. Will this be a deposit or a
withdrawal when she enters the information into her check register? Explain

Answers

Answer:

deposit

Step-by-step explanation:

It would be a withdrawal, because she’s taking money out of her account

please help i will give you brain list

Answers

Answer:

Here's something I found for the last question :

Answer:

I cant see the photo

Step-by-step explanation:

can someone help please??

Answers

I wish I could help ms.girl but I don’t get my question either
I wish I could help Ms.girl but I don’t get my questions either

How do you write 84% as a fraction?

Answers

Answer:

Step-by-step explanation: 21/25

Answer:

it would be 84/100  which would be 21/25 simplified

Step-by-step explanation:

I really need help with this question!!!!!!

Answers

Answer:

6

Step-by-step explanation:

30 divided by 4= 7.5

so 24 divide by 4= 6

Brainliest????

Answer:

6

Step-by-step explanation:

Look at both trapezoids and you can find the relation between both

Line DC and GH are equal, those different measurements they have the same characteristics. Same with AB and FE

Divide GH by DZ and you get the scale that you can apply to find FE

30/7.5 = 4

So line FE is 4 times smaller than AB

24/4 = 6

please help meeeeeeeee

Answers

Adjacent mean right next to.

So anything that’s not adjacent to <8 is the correct answer.

Hence <5 <4 <1 <2 <3

Which of the following options have the same value as 10\%10%10, percent of 333333?
Choose 3 answers:

A
0.1 x 0.33

(Choice B)
B
10 x 33

(Choice C)
C
1/10 x 33


(Choice D)
D
0.1 x 33

(Choice E)
E
10/100 x 33

Answers

Answer:

The answer is C, D, and E

Step-by-step explanation:

What is the surface area of the figure below?

A. 120 m²
B. 126 m²
C. 140 m²
D. 156 m²

Answers

Answer:

120m^2

Step-by-step explanation:

Let's start with the bottom. Since the height, base and width are all 4m, we can say that one square = 16 m^2.

There are 5 squares (counting the bottom), and 16 * 5 = 80.

Now the top triangles. We can split the bigger triangle in half. The base is 4m, you can tell from the bottom. To find the area of the triangle, split 4 in half to find the base of the smaller triangles, which equals 2.

Now for the smaller triangles, the base is 2 and the height is 5. We know that to find a triangle's area, you do (b * h)/2, which is (2*5)/2 = 5.

The big triangle is 2 of the small triangles, so you can multiply the smaller triangle's area by 2, which is 5 * 2 = 10.

There are 4 identical triangles at the top-- so 10 * 4 = 40.

80 + 40 = 120.

Hope this helps!

Attachment below plz help

Answers

Answer: Area of blue space = 34 cm^2

no links please, thanks !

Answers

Answer:

Step-by-step explanation:

H. 5 pounds: 2 pounds of Blue mountain = 40$, 5 pounds of Alpine = 40$ 2+5 =7 pounds. 40+40= 8$

$8 is the answer look above for explanatio

BEST ANSWER GETS BRAINLY

Answers

The answer is 3.5 look at the first triangle to the small triangle

SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER TO COMPLETE THIS! NO LINKS OR YOU WILL BE REPORTED, I WILL GIVE BRAINLIEST!!!!! I NEED THE ANSWER TODAY THIS ASSIGNMENT IS DUE TODAY

Answers

Now the coordinates:
A’-(0,-4)
B’-(4,-4)
C’-(4,2)
D’-(0,2)
Hope this help...don’t forget give brainliest☺️

Complete the following table so that it represents a linear function and determine the rate of change.

Answers

Answer:

let's say x1 = y2. for instance, that would mean that for every X, y would go up by 2. That would mean -1x = Y-2 because to get to -1 you have to subtract 1 by 2 because there is still 0 to account for.

so the table would look like this

-3=-6

-1=-2

1=2

3=6

5=10

That person is 100% correct!

How many times is 8 in 3,810,200 than the 8 in 8,911,053?

A. 1,000x smaller
B. 100x smaller
C. 80x smaller
D. 10x smaller
E. 8x smaller

Answers

Answer:

no clue lol

Step-by-step explanation:

d. 10x smaller (i have to write more so i'm typing this part)

PLEASE HELP ME!!!!! THIS IS TIMED!!!!!!!!! I WILL MARK YOU THE BRAINIEST IF YOU GET THIS CORRECT!!! (the answer NEEDS to be in FRACTION FORM!!!!) PLEASE HELP!!!!!!!!!!!!!!

Answers

Answer:1/14

Step-by-step explanation:

2+9=11 7+10=17 11+17=28 2 students with a brother and sister equals a 2/28 chance reduced to 1/14

Answer:

1 over 5 or 1/5.

well never mind i think the other person got it.

Match the descriptions with the shapes:
My faces are rectangles.
My two bases are triangles
All six of my faces are rectangles.

I have a rectangle for a base.
The rest of my faces are triangles.

I have a triangle for a base.
All of my faces are triangles.

I have a square for a base.
The rest of my faces are triangles.

All six of my faces are congruent squares.
I am also called a cube.

Answers

Answer:

A: Hexagon

B: Diamond

C:Triangle

D:Star

E:Square

credits to a user who said this for someone else

(segramsgingerale)

Help me with the image i posted

Answers

1: y = 3 2: y=1 3: y=13 4: y=4
y = 5 y=4 y=9 y=3
y = 7 y=7 y=7 y=2

5: 3
6: 2


7: x=10 8: x=3 9: x=0 10: x=4
x=7 x=6 x=2 x=6
x=4 x=8 x=3 x=12


11: x=1 12: x=5
x=2 x=3
x=3 x=2


Your welcome :)

Answer:

you plug in the input for x for the function to get the output

Step-by-step explanation:

0+3=3

2+3=5

4+3=7

Mr. Konroy purchased a new lawn mower. The lawn mower had been reduced in price to $168.75, which is 75% of the original price. What was the original price of the lawn mower?

Answers

Answer:

168.75/75%=$225

Answer:

done

Step-by-step explanation:

divide 168.75 by 75%

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions Online Content: Site 1 Explain the 2 different answers you can get when solving an equation and the variable is eliminated.​

Answers

Answer:

There isnt a link

Step-by-step explanation:

U didn’t include the link
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