Solve by Elimination

Solve By Elimination

Answers

Answer 1
1) (3,4), 2) (1,9), 3) (4,4)
Answer 2
answer: (3,4)

multiply both sides of the top equation by 2

get rid of the x variable by subtracting add all corresponding numbers and variables (4+(-4), -4+7, -4+16) which leaves you with 3y=12

divide both sides by 3 which cancels out the 3y and leaves you with y=4

input y in your top equation to find x. (-2x+2x4=2)

this leaves you with x=3

I HOPE THAT MADE SENSE!!!

Related Questions

Please help!!!
"Michelle had a piece of lumber which measured 51 inches long. She cut it into 5 three-inch pieces, and the rest into two-inch pieces. Which equation can be used to describe the number of two-inch pieces (a) Michelle had when she finished cutting the piece of lumber?"

Answers

Answer:

(51 - 3 x 5)/2

Over the summer Hans ran 89 laps for the track and swam 147 laps of the pool. Hans completed twice as many as his friend lee. How many laps did lee run and swim?

Answers

Answer:

118

Step-by-step explanation:

Add Hans laps together then divide by two

Answer:

The answer is 118 laps.

Step-by-step explanation:

First you would have to add 89 + 147 to find how many laps Hans ran over the summer.

Then you have to divide  the answer from 89 + 147 by 2 which is 236 divided by two because Hans' laps were twice as much as lee's do when you do 236 divided by 2 you get 118. So, Lee ran, and swan 118 laps.

Solve: 1/4x - 5 = 3/4x - 12

Answers

The answer to the math problem it X=14 hope this helps
7=.5X
X=14
HOPE THIS HELPS!!!

Is this a numerical expression OR algebraic expression: 45 + 34 x 7a
numerical expression
algebraic expression

Answers

It’s a algebraic expression, it has letters in it

I need help with this question pls

Answers

Ginger sold 8 small candles and 6 large candles or 12.50 times 8 equals 100 and 25 times 6 equals 150 and u add 100 +150 which equals 250
It is 8 small and 6 large
$12.50 X 8 is $100
$25 X 6 is $150

x
My friends and I need help...

Answers

8/3 because of y2-y1 divided by x2-x1 :)
The slope of the line is 8/3x
Explanation: rise over run, the line rises 8 and runs 3
The entire equation would be y=8/3x+4

please give me the correct answer. very easy but just please make sure it's correct :c <3 ily

Answers

Answer:

9² = 81

-5⁴ = -625

- 3⁴ = - 81

¼³ = 0.015625

Step-by-step explanation:

Plss follow me and Mark as brainlest. Thanks :-)

Answer:

8. 9^2, this can be simplified to 9*9 which is 81!

9. -5^4 can be simplified to -5*-5*-5*-5 which is 625.

10. (-3)^4 can be simplified to -3*-3*-3*-3 which is 81!

And finally 11. (1/4)^3 can be simplified to (1/4)(1/4)(1/4) which is 1/64.

HELP!!!!!!!!!!!!!!!!!!!

Answers

Answer: 13/12

Step-by-step explanation:

Common denominator:12

9/12 plus 4/12 equals 13/12 equals 1 1/12

Answer: 9/12 plus 4/12 = 13/12 or 1 1/12

Step-by-step explanation:

Apple stock recently closed at a price of $450 per share. Andy's mom bought Apple stock in 2010 at a price of $150 per share. What is the percentage of change in Apple shares since 2010?

Answers

Answer:

200% increase

Step-by-step explanation:

(450-150)/150 =

300/150 =

200%

Does anyone know????

Answers

Answer: x + y

Step-by-step explanation: I think that’s it, not too good with that stuff, sorry

Simplify negative 3 over 4 divided by 2 over negative 8.

Answers

Answer:

-3/4 ÷ -2/8 = 3

the answer is 3

Answer:

3

Step-by-step explanation:

3/4 / 2/8

Keep change flip

3/4 x 8/2

Multiply the numerators and denominators

24/8

Simplify

24/8=3

Hi! does anyone mind answering this? I need it as soon as possible too =v='

Answers

The answer:

The distance between the two points would be (0,1.1)

Answer: the difference between the 2 points is 1.1

Step-by-step explanation: the difference between the two points is found by the formula distance= y2-y1/x2-x1

When you plug them in it will be 1.4-2.5/3-3

Wich will give you a 1.1

Please help with this

Answers

Answer:

i think step two, check me though im not entirly sure

Step-by-step explanation:

I think the answer is step two hope you have a wonderful day

(HELPPP)Use the table to predict the number of times you will spin 3 when you spin the spinner 100 times.

Answers

Answer:

18

Step-by-step explanation:

If you add the times spun together, you will get 50. Then you multiply each value by 2 to get a how times it would occur in 100.

The answer issss 18 do yea

REAL answers only pls!

Answers

Answer:

y=2x

Step-by-step explanation:

Answer:

y=2x

Step-by-step explanation:

It is a positive slope, and then it goes up 2, over 1. And since slope is rise over run, it is a positive slope of 2

Which associations best describe the scatter plot?

Select each correct answer.


Nonlinear association

Positive association

Linear association

Negative association

Answers

Answer:

positive association

Step-by-step explanation:

Scatter Plot: Strong Linear (positive correlation) Relationship

Answer: nonlinear and negative

Explanation: The line is not necessarily straight so it’s not linear, it’s nonlinear. as the time increases the distance decreases therefor it is negative.

Can y’all help me draw a model please I got the answer I just need the model the answer is 0.5

Answers

Answer:

The correct awnser is 1.5

Step-by-step explanation: i calculated it

4.Han earned $850 over the summer working odd jobs. He wants to put his money into a savings account for when he is ready to buy a car. His bank offers a simple interest account at 5%, how much interest will Han have earned after 2 years?
A.$10.00
B.$17.00
C.$42.50
D.$85.00
Question 4^
5. Han checks with another bank and their interest rate is 4%. Based on your answer in question 4, how much longer will he have to leave his money in the account to earn the same amount of interest as the first bank?
A.6 months
B.1 year
C.2 years
D.2.5 years

Answers

Answer:

C and A

I hope this helps!! :)

Answer:

in the first question is

?/850 = 5/100

850×5=4,250

4,250 divided by 100= 42.50= 42.5

and the second is the A

need help
please
will give brainly

Answers

Answer:

i think its (-x,y)

Step-by-step explanation:

A recipe calls for 3/4 cup of sugar for every 3 cups of flour. How much flour should be used for every 1 cup of sugar?
PLEASE HELP ASAP will give brainlyst

Answers

Answer:

4

Step-by-step explanation:

3/4+1/4=4/4=1

3+1=4

1:4

For every 1 cup of sugar, you should use 4 cups of flour in the recipe.

Given that:

Recipe ratio: 3/4 cup of sugar for every 3 cups of flour

To find out how much flour should be used for every 1 cup of sugar,

We can use the concept of ratios.

Step 1: We know that the ratio of sugar to flour is 3/4 to 3.

To make the ratio easier to work with, let's scale it up by multiplying both sides by 4, which gives us 3 cups of sugar to 12 cups of flour.

Step 2: Now, we have the ratio 3 cups of sugar to 12 cups of flour.

To find out how much flour is needed for 1 cup of sugar, we need to divide both sides of the ratio by 3.

After simplifying, we get 1 cup of sugar to 4 cups of flour.

Therefore, for every 1 cup of sugar, you should use 4 cups of flour in the recipe.

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Please help but only answer if u know it!

Answers

Step-by-step explanation:

[tex] \frac{ {7}^{4} }{ {7}^{ - 3} } = {7}^{4 - - 3} = {7}^{4 + 3} = {7}^{7} [/tex]

Answer:

7 to the power of 4 / 7-3

Step-by-step explanation:

Explain how to find the area of the composite figure below. Be as specific as possible, using the formulas provided. [A=bh, A=lw, A=1/2bh, A=1/2h(b1+b2)].

PLEASE HELP!

Answers

Answer:

60m

Step-by-step explanation:

4×6=24 so you have that first chunk of the left side.

since 12-4= 8 you can tell that the bottom of the "triangle" is 8m

3x8÷2=12 so now youhave one part left.

since we have already inferred that the base of the triangle was 8m we know that the length of the rectangle was 8m. 8×3=24

now you add the three values. 24+12+24=60

This is math, help me with it plz

Answers

Answer: X=136 degrees
Explanation: A triangle has a total of 180 degrees measuring all 3 angles. 180-90-46 gives me 44 left, then subtract 44 from 180 and that gives you 136 degrees.

Does anyone know????

Answers

Could be wrong. wait no. its 1/4 sorry

Answer:

1/4

Explanation:

y = -3x + 3

HELP I WILL GIVE BRAINLIEST TO BEST ANSWER 40 POINTS

Answers

Answer:

x=anything

Step-by-step explanation:

Answer:

(0,3)(1,0)

Step-by-step explanation:

The local water slides have 90 employees, of which 80% are temporary. How many temporary employees are there?

Answers

If 80% of 90 were temerary, 75 would be the answer
It would be 78 Explanation: Could be wrong because I thought of the answer really quickly but because 80% of 100 is 80, and blah blah blah 8 * 9 is 72 oh wait!!!!! It’s 72!!!

Math Integers Plese Show Work (Free Brainliest)
James borrows $35 from his father for gas, and then borrows $29 more for video games. What integer represents the amount of money that James owes his father?

Answers

Answer:

64

Step-by-step explanation:

You just have to add 35 and 29 and the answer is an integer cause it's a whole number.

Answer:

64

Step-by-step explanation:

You are adding more to the first integer 35, so you have to add the next integer 29 to it.

So, the equation would be 35 + 29

First, add 9 and 5 which is 14. Carry the 1 to the next part.

3+2=5

5+1=6

The end result is 64.

which expression is equivalent to 6(x+2y)+3+4y+5

Answers

Answer:

6x+16y+8

Step-by-step explanation:

In order to solve this problem,

6(x+2y)+3+4y+5

We would first need to expand the brackets

6x + 12y + 3 + 4y + 5

Collect like terms together.

6x+12y+4y+3+5

Add the like terms

6x+16y+8

Therefore, the expression which is equivalent to 6(x+2y)+3+4y+5 is 6x+16y+8

Answer:

6x+16y+8

Step-by-step explanation:

m a t h

find the quotient in simplest form. 7 1/2 divided by 3/3/4
A. 1/2
B. 2
C. 2 1/2
D. 1 3/4

9 divided by 2 1/4

A. 7 3/4
B. 4/9
C. 4
D. 1/4

Answers

1. 7 1/2 divided by 3/3/4 is equal to 7 1/8.

I think you may have typed the question wrong.

2. 9 divided by 2 1/4 is equal to 4 3/4

I think you may have typed the question wrong again

The quotient in the simplest form are; a) 2 and b) 4

What is quotient ?

The number we obtain when we divide one number by another is the quotient.

Given are the expressions, [tex]7\frac{1}{2}[/tex] ÷ [tex]3\frac{3}{4}[/tex] and [tex]9[/tex] ÷ [tex]2\frac{1}{4}[/tex]

a)  [tex]7\frac{1}{2}[/tex] ÷ [tex]3\frac{3}{4}[/tex]  = 15/2x4/15 = 2

b)  [tex]9[/tex] ÷ [tex]2\frac{1}{4}[/tex] = 9x4/9 = 4

Hence, The quotient in the simplest form are; a) 2 and b) 4

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me need more help plz also add explanation real explanation

Answers

So we want to find the surface area of this pyramid. Finding the surface area of a 3D shape is essentially finding the area of all its sides and adding them together.

What we're going to have to do here is find the area of the base of the pyramid, which is basically a square, and find the area of all four sides of the pyramid, which are triangles.

Formula for area of a square: length × width

Formula for area of a triangle: (base × height) ÷ 2

First we will find the area of the base:

l × w = A

(Write out formula)

8 × 8 =

(Input values)

A = 64 m^2 (square meters or meters squared)

(We have our answer, dont forgot to write your units.)

So we've figured out the area of the base. Now onto the triangles:

(b×h) ÷ 2 = A

(Write out formula)

(8 × 6) ÷ 2 =

(Input values)

48 ÷ 2 =

(Use PEMDAS to solve this correctly. We did whatever was in the parenthesis first, which was multiplication.)

A = 24m^2 (square meters or meters squared)

(We have our answer.)

Now we've found the area of the base of the pyramid and one of the sides of the pyramid, but we're almost done! There's four sides to the pyramid, they're all the same. So since we found the area for one, we can multiply that by 4 to find the area of all sides added together:

24 × 4

(area of a side × total sides)

= 96m^2

All that's left is adding the 96 to the area of the base to get our total surface area of the pyramid:

96 + 64 = 160

The surface area of the pyramid is 160m^2(square meters or meters squared)

(Hope this helps :) )

Answer:okkkkkkkk

Step-by-step explanation:360

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