Mathematics Middle School

Solve each system using the substitution method. Show all work and steps.
4.5.1) 2x-5y=8
x=3y-1
A. Substitute the equation that is already solved for one variable into the other equation.

B. Solve for the single variable in the one-variable equation.

C. Substitute the result from the previous step into x=3y−1 and solve for the unknown variable.

D. Write the solution as an ordered pair. E. Check the solution with the equation not used in Step C.

Answers

Answer 1

Answer:

Solve for the single variable in the one-variable equation.

Step-by-step explanation:

Related Questions

What is the prime factorization of 144? Be sure to show your strategy.

Answers

Answer:

So, the prime factors are written as 2 x 2 x 2 x 2 × 3 x 3 or 24 x 32, where 2 and 3 are the prime numbers. It is possible to find the exact number of factors of a number 144 with the help of prime factorisation. The prime factor of the 144 is 24 x 32. The exponents in the prime factorisation are 4 and 2.

Step-by-step explanation:

What is the slope of the line in the graph?

Answers

Do rise/run
Rise = 3, run = 3
The slope is 1

R-3 and S-3
um u i think

I need help asap pls

Answers

Answer: Its B

Step-by-step explanation: Hope this helps you

Correct it is c. I also double checked.

4.0374 ÷1.8 =0.2243
Is this solution correct?
If yes, tell me the steps to support your decision.
If no, describe the error(s) that Jordan made AND tell me the correct solution
PLEASE AND THANK YOU :C

Answers

Answer:

False

Step-by-step explanation:

the left side 2.243 does not equal to the right side 0.2243,which means that the given statement is false

and i am correct trust me :).

8=f-(13-2)
???? help

Answers

Answer:

I got you

Step-by-step explanation:

f= 19

Simplifying
8 = F + -1(13 + -2)

Combine like terms: 13 + -2 = 11
8 = F + -1(11)

Multiply -1 * 11
8 = F + -11

Reorder the terms:
8 = -11 + F

Solving
8 = -11 + F

Solving for variable 'F'.

Move all terms containing F to the left, all other terms to the right.

Add '-1F' to each side of the equation.
8 + -1F = -11 + F + -1F

Combine like terms: F + -1F = 0
8 + -1F = -11 + 0
8 + -1F = -11

Add '-8' to each side of the equation.
8 + -8 + -1F = -11 + -8

Combine like terms: 8 + -8 = 0
0 + -1F = -11 + -8
-1F = -11 + -8

Combine like terms: -11 + -8 = -19
-1F = -19

Divide each side by '-1'.
F = 19

Simplifying
F = 19

rewrite this expression using a positive exponent. 1/2^-6

Answers

64is the answer hopefully it will be correct

The sequence below shows the number bacteria Arjun observed each hour for a science experiment:
5, 20, 80, 320,1,280,..
Which recursive function describes the number of bacteria observed at the nth hour?

Answers

Answer:

Hope this helps!

Step-by-step explanation:

Hope this helps

See screen shot :)

please help! thanks :)

Answers

The correct answer is A.

first correct answer gets braniliest

Which is the solution to the inequality?

Y + 15 < 3

y less-than negative 12
y greater-than negative 12
y less-than 18
y greater-than 18

Answers

Y = less than 18.

If you want me to explain I can in the comments

HELP ME PLEASE! I NEED HELP, ASAP! THX

Answers

Answer:

Step-by-step explanation: so 3x2 is 6 because you have 2 color and 3 different options of shirts.

Answer:

Step-by-step explanation:

put 2/3 5/7 16/21 in order from least to greatest

Answers

Answer:

5/7, 2/3, and 16/21

Step-by-step explanation:

If you put them all under the same denominator you will get 2/3=14/21, 5/7= 10/21, and 16/21. And if you put them in order it is 10/21, 14/21, and 16/21. Hope this helps, let me know if correct!!

2/3, 5/7, 16/21

Step-by-step explanation:

turn them into decimals

Find five solutions for the linear equations -x+3/4 y=-6, and plot the solutions as points on a coordinate plane. please help me with this

Answers

The answer should be 1=1-45+78/=r’d

A rectangular cardboard has dimensions as shown. The length of the cardboard can be found by dividing its area by its width. What is the length of the cardboard in inches?

Rectangle with width labeled on the right, width equals 4 and 1 over 2 inches. Below the rectangle, it says, length equals question mark. Inside the rectangle, it says area equals 36 and 3 over 4 square inches.

8 and 1 over 6
9 and 3 over 4
32 and 11 over 20
154 and 7 over 20

Answers

I just did this..............

Try 8 1/6 If it’s wrong don’t hesitate to message me if it is. I will gladly fix my answer

lol so It's the same question but I typed it wrong now it gave me another completely different question :,)

Answers

this is a sign to ask your teacher for help

Answer:

2.05

Step-by-step explanation:

plls give brainliest

The rectangle and the trapezoid have the same area. What is the length l of the rectangle?

l=
ft

Answers

The nacer is 66 or67 not that shere

The length 'l' of the rectangle will be;

⇒ l = 18 feet

What is mean by Rectangle?

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

Given that;

The rectangle and the trapezoid have the same area.

Now,

Since, The rectangle and the trapezoid have the same area.

Hence, We get;

Area of rectangle = l × 9

And, Area of trapezoid = 1/2 (24 + 12 ) × 9

= 1/2 × 36 × 9

= 18 × 9

= 162

So, We get;

⇒ l × 9 = 162

⇒ l = 162/9

⇒ l = 18 feet

Thus, The length 'l' of the rectangle will be;

⇒ l = 18 feet

Learn more about the rectangle visit:

https://brainly.com/question/2607596

#SPJ2

b/5 = 8/16

(character limit)

Answers

b is 2.5 because b/5 should be 1/2, 2b is 5, 5/2 is 2.5

2.5 i believe
16/8=2 so then 5/2=2.5

Quick! Will give brainliest!

Answers

b= -3
m= 2
y= 2x-3
Hope this helps!

Answer:

b = -3

m = 3/2

equation: [tex]y = \frac{3}{2} x - 3[/tex]

Step-by-step explanation:

b is the y-intercept, or where the line meets the y-axis.

m is the slope. rise/run = 3/2

equation - im assuming you wanted slope-intercept form (y=mx+b)

ILL GIVE U A BRAILYEST IF U EXPLAIN AND ANSWERRRR

Answers

Answer:

Step-by-step explanation:

since the scale is 15 feet for every 2 inches and the scale model length is 3:

3/2 = 1.5

multiply 1.5 to 15 feet: 22.5

answer is 22.5

Answer:

22.5

Step-by-step explanation:

2 in.=15 this is the scale as a ratio

1 in.=7.5 by dividing by 2 you can find what one inch would represent int he scale model

3 in.=22.5 by multiplying by 3 you find how many 3 inches in the scale model represents.

wich inequality is true?

Answers

Answer:

Step-by-step explanation:

just put them into percents lol

50% < 33.33% not true

75% > 66.66% true

-25% < -66.66% not true

-100% > 75% not true

so the second one is true

hope this helps <3

I believe it is the second one. It would be the only one that would make sense! Hope I helped!

I have been stuck on this and I just can't remember what to do

Answers

Answer:

angle JKL= 54 degrees

Step-by-step explanation:

look they are congruent

(2x+5)=(3x-6)

x=11

then plug in

2x+5

2(11)+5

=27

then

3x-6

(3)(11)−6

=27

Both are congruuent

27+27=54

the answer is 54 because if you complete 2x+5=3x-6, x=11 which makes 2(11)+5, which equals 22+5=27, and 27+27 is 54

PLEASE HELP A GIRL OUT!!

Answers

Answer:

Step-by-step explanation:

It is C because the question asks for 1/4th of the wholw angle =45 degrees

hope this helps

Answer:

I think its c

Step-by-step explanation:

how would you solve -5(x - 1) = 40

Answers

you would distribute the -5 to the x and the -1, so it would be:
-5x+5=40
you would then subtract 5 from both sides, so you would get:
-5x=35
you would then divide by -5 on both sides, so you would get:
x=-7

Answer:

x = -7

Step-by-step explanation:

Apply the distributed property: -5x - -5 = 40Simplify: -5x + 5 = 40Subtract 5 from each side, so it now looks like this: -5x = 35Divide each side by -5 to cancel out the -5 next to x. It should now look like this: x = -7

I hope this helps!

Which 2 expressions both result in decreasing by 13%

A x-0.13x and “multiply x by 0.13”
B x-0.13x and “multiply x by 0.87”
C x-0.87x and “multiply x by 0.13”
D x-0.87x and “multiply x by 0.87”

Answers

A and B should be it

Answer:

Step-by-step explanation:

Triangle BAM is shown along with its image ΔB′A′M′ on the coordinate plane.
Coordinates:
B: 1, -4 B': -1, -4
A: 4, 12 A': -4, -2
M: 2, 5 M': -2, 5

Write a verbal description of the reflection and describe the reflection using symbolic representation.

Answers

Answer:

The reflection is and classic reflection across the y-axis as the y stay the same and the x does not.

I wish I could help u with this one

I NEED HELP AGAIN PLS

Answers

Answer:

70% of 2500 is 1750 so blue is the correct color.

Have a great day please mark brainliest.

What is the slope of the line?

Answers

Answer:

The slope is 2/1

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

First thing you should notice first is that the line is going up to the left, that means that the slope will be negetave. Then, follow the rise over run method. Start at any point on the line, im going to use (0,1). go up 2 and over 1. You get -2/1 aka -2. I hope this helps!

48 decreased by a number
turn phrase into alegrabralc expression

Answers

Answer:

48-x

Step-by-step explanation:

Decreased means subtraction

Let x be the unknown number

48-x

The answer to this is 48-x !!

There is 1/3 gallon of water in a 3-gallon container. Write a multiplication AND a division equation to represent the situation.

Answers

Answer:

1/3

Step-by-step explanation:

1×3÷3=1/3

Answer:

1/3

Step-by-step explanation:

Number 6: In a football game, the Bobcats scored all touchdowns, which are worth 7 points each. The Crocodiles scored all field goals, which are worth 3 points each. Neither team went scoreless. The final score of the game was the lowest tie possible given these conditions. How many points did each team score?

number 6 and number 7 are not together

Number 7: Multiplying a number by its reciprocal always results in a product of 1. What number must be multiplied by 3 23 to create a product of 1?

Answers

Answer: 0.1304

Step-by-step explanation:

Answer: 21points
Step-by-step explanation: 3 times 7 equals 21

Solve this question.

Answers

i cant see the picture but i need pointss lamaa

Fr same here I need points

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