Mathematics Middle School

Simplify the expression all the way down.

−5(1+2k)−8(−4+5k)
Question 1 options:

-50k+27


-30k+37


-5-10k+32-40k


32-5-40k

Answers

Answer 1

Answer:

-50k+27

Step-by-step explanation:

=(−5)(1)+(−5)(2k)+(−8)(−4)+(−8)(5k)

=−5+−10k+32+−40k

Combine Like Terms:

=−5+−10k+32+−40k

=(−10k+−40k)+(−5+32)

=−50k+27

Related Questions

An ice-skating rink inspects 25 pairs of skates and finds 2 pairs to be defective. The rink has 151 pairs of ice skates. Estimate the number of pairs that are likely to be defective.

Answers

145 because every 25 pairs you have, 2 are defective
the answer should be 12

PLEASE HELP !!!!!!!!!! I'LL GIVE BRAINLIST!!!!!!

Answers

It is 189 the answer

189 is the answer

  -Millie

Factor the following expression using the GCF: 10ab + 20.

10(ab + 2)
5(2ab + 4)
2(5ab + 10)
10(ab + 20)

Answers

The first one is 10ab + 20
First answer because 10(ab) is 10 ab and 10(2) is 20. Also 10 is the greatest common factor between 10ab and 20.
Hope this helps and have a great day!

need answers.. fast please

Answers

y=x+4 so b would be your answer

Answer:

y=x+4

Step-by-step explanation:

y is the total number and 4 is the number you already have. add y as the unknown amount or too be determined amount of dogs.

What is the classification of each system?

Drag the answers into the boxes to match each system.

{4x−2y=102x−y=5

{y=2x−3−2x+y=−5

{2x−5y=143x+4y=10

Answers:
Consistent Indpendent
Consistent Dependent
Inconsistent

Answers

Answer:

 (dependent)

(Incosistent)

(Independentt)

Step-by-step explanation:

{4x−2y=102x−y=5  

{y=2x−3−2x+y=−5

{2x−5y=143x+4y=10

The system of equations 2x−5y=14 and 3x+4y=10 have unique solution, so they are consistent independent.

What is a linear system of equations?

A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.

A) The given system of equations are 4x−2y=10 and 2x−y=5

4/2 = (-2)/(-1)=10/5

2=2=2

Since, a₁/a₂ =b₁/b₂=c₁/c₂

The system of equations have infinitely many solution, so they are consistent dependent.

B) y=2x-3 and -2x+y=-5

Here, 2x-y-3=0 and -2x+y+5=0

2/(-2)=(-1)/1≠(-3)/5

-1=-1≠(-3)/5

Since, a₁/a₂ =b₁/b₂≠c₁/c₂

The system of equations are parallel, so they are inconsistent equations.

C) 2x−5y=14 and 3x+4y=10

Here, 2x-5y-14=0 and 3x+4y-10=0

2/3≠(-5)/4≠(-14)/(-10)

Since, a₁/a₂ ≠b₁/b₂

The system of equations have unique solution, so they are consistent independent.

Therefore, the system of equations 2x−5y=14 and 3x+4y=10 have unique solution, so they are consistent independent.

To learn more about the linear system of an equations visit:

https://brainly.com/question/27664510.

#SPJ2

An office supply store sells pencils individually or by the case. Pencils purchased individually cost $0.97 each. One case of forty pencils costs $37.20. You have an annual budget of $95.00 for pencils.

Without exceeding the annual budget of $95.00, you can purchase _____ individual pencils.

Answers

0.97, add 7 to the five
You can purchase 97 individual pencils because 0.97*97=94.09 and if you do 98 it goes over the mark so 97 is the answer.

BRAINLYYYYY


Marcus can choose between a monthly salary of $1,750 plus 5.5% of sales or $2,400 plus 3% of sales. He expects sales between $5,000 and $10,000 a month. Complete the explanation to show which salary option he should choose based on how much he could make.

Answers

Answer:

Marcus should choose $2,400 plus 3% of sales.  

Step-by-step explanation:

He would choose the 2,400 plus 3% because he would earn more from the 2,400 plus 3% than the 1,750 plus 5.5%

Please explain how you solved this!! I really need help!!


Jada walks up to a tank of water that can hold up to 12 gallons. When it is active, a drain empties water from the tank at a constant rate. When Jada first sees the tank, it contains 8 gallons of water. Four minutes later, the tank contains 5 gallons of water.

A) At what rate is the amount of water in the tank changing? Use a signed number, and include the unit of measurement in your answer.

B) How many more minutes will it take for the tank to drain completely? Explain or show your reasoning.

C) How many minutes before Jada arrived was the water tank completely full? Explain or show your reasoning.

Answers

1) Gallons per minute change is -2/3 gallons per minute since it decreases by 2 gallons in 3 minutes

2) we have 5 gallons and lose 2/3 gallons per minute

(2/3 gal/minute)(x minutes) = 5 gallons
x = 5(3/2) = 15/2 = 7.5 minutes to drain the other 5 gallons

3) There was 10 gallons when the tank is full
That is 3 gallons more than the 7 gals there when Jada arrived.
(2/3)(x) = 3
x = 3(3/2) = 9/2 = 4 1/2 minutes

The tank was full 4 1/2 minutes before Jada arrived
1) Gallons per minute change is -2/3
gallons per minute since it decreases by 2
gallons in 3 minutes
2) we have 5 gallons and lose 2/3 gallons
per minute
(2/3 gal/minute) (x minutes) = 5 gallons
X=5(3/2) = 15/2 =7.5 minutes to drain the
other 5 gallons
3) There was 10 gallons when the tank is
full
That is 3 gallons more than the 7 gals
there when Jada arrived.
(2/3)(x) = 3
x=3(3/2) = 9/2 = 4 1/2 minutes
The tank was full 4 1/2 minutes before
Jada arrived

Can someone help me with this please? I don't know how to do it, and I need the answer asap ;-; (Image Below)

Answers

Answer:

ask googl bruv

Step-by-step explanation:

The answer is A. 3 because 20-8 is 12 and 12 divided by 4 is 3

Clifford has a roll with 32.5 feet of twine. He cut off a piece that was 18.8 feet long to tie some
bags of feed. How much twine did he have left on the roll?
A 13.7 feet
B 41.3 feet
C 14.7 feet
D 16.3 feet

Answers

Answer:

I believe the answer is 13.7

Step-by-step explanation:

Think the answer will be A

When a bush was first planted in a garden, it was 12 cm tall. After two weeks, it was 120% as tall as when it was first planted. How tall was the bush after two weeks?

Answers

Answer:

26.4

Step-by-step explanation:

12 times 120% + 12

26.4 is the awnser brainly made me write 20 words

How do I solve this-


A) -0.3 = -30c

B) [tex]1/5[/tex]a = -6

C) 14 - b = 14.2

Answers

A) -0.3=-30c

divide on both sides ⇒ [tex]\frac{-0.3}{-30} = \frac{-30c}{-30}[/tex]

0.01 = c

B) do the same way. a =-30

C)    14  -  b  =  14.2

      +14            +14

              -1b =  28.2

          -1b/-1  =  28.2/-1

b = -28.2

Hope this helped :3

-Jazzy <3

which values from the set (-6,-4,-3,-1,0,2) satisfy this inequality?

- 1/2 x + 3 > 5

Answers

Answer:

-6

Step-by-step explanation:

Manipulating the initial inequality, we get x < -4

Out of the given ones, only -6 is STRICTLY smaller than -4, thus the only one that satisfies the inequality.

i need help again :)) i hate this ;((

Answers

Answer:your answer would be C because if you are trying to find the amount of baking soda the Trisha used the problem would be 3 times 2 to figure out the answer

Step-by-step explanation:

The answer is C. or the choice y = 3x

2b³+5=2(3)³+5=
Pls answer

Answers

Answer:

Simplified: 2b³+64

Step-by-step explanation

This answer is true if the first equal sign is actually an addition sign.

Pleas help this is due at 3pm!

Answers

seeing this now but B. is no C. is yes and A. is no
A is no
B is yes
C is yes

can someone help me please

Answers

Answer:

first one is 4a -1 y

2nd one is 4a -1y

You answer would be

Both of them are 4a-ly

Please helpp!!
I neeeed help!!!!!

Answers

Answer:

C

Step-by-step explanation:  

-783(1.05) i think i can barely see it

Lakeesha deposits $1500 into a Young Savers account. The account receives 4% interest compounded annually. What is the balance in Lakeesha's account after 2 years? After 3 years?

Answers

Answer:

1,622 after 2 years at 4% interest. $1,687 after 3.

Step-by-step explanation:

My explanation has been provided in the image linked.

In fact I think the person above me is wrong, here is why:

4 percent (interest) of 1500 = 60

Therefore,

1 year= 1560

2 years = 1620

3 years = 1680

A square has an area of 279ftSquared . Between which two integers is the length of one side?
A. Between 15 and 16 feet
B. Between 16 and 17 feet
C. Between 16 and 16.5 feet
D. Between 16.5 and 17 feet

Answers

The answer is C. Between 16 and 16.5
It’s c because if you x and d you get c

Please help me I don’t understand this type of mathematics

Answers

this is false you can not combine x and y on the left side

Answer:

False its not true

hi i need help asap TvT

Answers

Answer:

1 is the answer

Step-by-step explanation:

bc the first number represent x and the second y

(x,y)

Answer:

answer is 1

Step-by-step explanation:

the x coordinate, -1.5, is negative so you must go to the left 1.5 on the x axis. then y is also negative at, -1, so you must go from the -1.5 on the x axis down one to -1

Please explain how you solved 5x+2=47

Answers

Answer:

Step-by-step explanation:

5x+2-2=47-2 subtract 2 from both sides

5x=45 simplify

5x/5  = 45/5 divide both sides by 5

x=9 simplify

Subtract 2 from both sides, then divide both sides by 5 to get X=9

This afternoon Celine left school, rode the bus 2/3 of a mile, and then walked 1/6 of a mile to get home. How much farther did Celine ride than walk?

a. 5/6
b. 1/2
c. 1/6
d. 3/12

Answers

Its c just trust me please

A hiker walks at a speed of 3 2 5 kilometers per hour. How many kilometers will the hiker walk in 1 1/6 hours? I will mark brainliest!

Answers

Answer:

379.16 kilometers

Step-by-step explanation:

325 kilometers x 1 hour = 325 kilometers

325 kilometers x 1/6th of an hour=

325/6=54.16 kilometers

325 kilometers + 54.16 kilometers=379.16 kilometers in total

Answer:

379.16 kilometers

Step-by-step explanation:

hope this helps

mark me brainly

thanks for the points

andddddd

sparkles and love

☆*: .｡. o(≧▽≦)o .｡.:*☆

42-15 dived by 5 step by step :D

Answers

Answer:

(42 - 15) ÷ 5= 5.4

____________________________________________________________

1) 42 - 15 = 27

2) 27 ÷ 5 = 5.4

Select the fraction that is equivalent to two sixths.

Question 7 options:

one sixth

two ninths

four twelfths

three sixths

Answers

Answer:

four twelfths

Step-by-step explanation:

multiply by 2/2 to get 4/12

the answer is four twelfths
you can simplify 4/12 to 2/6

I will give brainliest!

Answers

A is the answer ......

There were 1150 pounds of flour in the grain store. After most of the flour was sold, there were 230 pounds left. What was the percentage decrease of the grain store’s flour?

Answers

9514 1404 393

Answer:

  80% decrease

Step-by-step explanation:

The percentage change is found from ...

  percent change = ((new value)/(old value) -1) × 100%

  = (230/1150 -1) × 100%

  = -0.8 × 100%

  = -80% . . . . . a negative change is a decrease

The store's flour quantity decreased by 80%.

How many groups of 1/2 pound are in 3 3/4 pounds?

Answers

There are 7 1/2 groups
Other Questions
Based on the information presented what do think Manny should decide? Option #1: Keep the old car Option #2: Buy the fuel-efficient used car Option # Number Select the correct answer.Choose the phrase that best completes this sentence:Je ne t'entends pas. Il faut que tu parlesOA.en franaisOB. voix basseO C.sur scneOD. voix haute PLEASE HELP! WILL MARK BRAINLIEST!!!!!! The grade student makes an attached varies directly with the amount of time the student spent studying. Suppose a student spends four hours studying make the grade of 65% on a test. what is an equation that relates grade earned on the test G with amount of time spent studying T in hours. simplify:-5 1/4-(-7 1/2) when you are on assignment and the job site supervisor asks you to do something from or in addition to your original job descriptipon, you should: A woman has a total of $ 13 , 000 to invest. She invests part of the money in an account that pays 10 % per year and the rest in an account that pays 11 % per year. If the interest earned in the first year is $ 1340 , how much did she invest in each account? Which work of art or artistic movement do you find most appealing? Why? What values were important during theRenaissance? Choose one of the film adaptations from the list below or a different film adaptation that you find. Watch how the action in Act III unfolds in the film version. (You are strongly encouraged to watch the entire film, but be sure to identify and watch the part of the film that corresponds to act III at the very least.)Macbeth. 1948. Director, Orson Welles. USA. 107 min.Macbeth. 1979. Director, Philip Casson. UK. 146 min.As Act III, Scene iii is relatively short, play that portion of the film several times.Which film adaptation did you choose? What similarities and differences did you notice between the text and film versions? A ferris wheel can accommodate 75 people in 15 minutes. How many peoplecould ride the ferris wheel in 5 hours? What was that rate per hour?PLEASE HELP!!!! A volume of 2.15 mL of Oxygen was collected in the lab at a temperature of 17 C and 740.2 mmHg. After a day, the volume of the gas has become 2.21 mL and the barometer reading (for air pressure) had not changed. What is the new temperature in the lab (in C)? The average American credit card debt is about $15000, if you make monthly payments of $350, with annual interest rate 16%, how many months will it take to pay off the credit card debt and how much will you pay in interest. What land was used for the newcapital of Washington, D.C.? Whatyear was the new capital moved? Is the following conditional true?If a number is rational, then it is a quotient of two integers. If two objects have different temperatures, heat will flow from the warmer object to the cooler one until _________________________. A. one reaches a temperature of zeroB. one runs out of energyC. they reach the same or equal temperatureD. one is absorbed into the other find what x =_______ Multiple choicesHelp me to finish this Imagine yourself as a solider in the trench warfare during ww1. Write a letter to your family from the battlefield... The graph above shows marnie's rate while walking. Which of the following is an ordered pair on the graph??A.(2,100)B.(3,200)C.(4,250)D.(8,500) Please help me Write a paragraph that explains how the siege of the capitol can be attributed (at least in part) to social media.In your paragraph, address each of the following questions:How did social media play a role in the protest at the capitol?How might the President have inflamed his supporters?What role could "incestuous amplification" have played in all of this?Should the protesters be charged as terrorists? Why or why not?Start with an introduction, create the body of your paragraph (addressing the questions), and end with a conclusion.