Mathematics Middle School

PLEASE ANSWER THIS FAST WILL MARK BRAINLIEST AND 15 POINTS

Barry simplified 5x – 3y – x + 6z, as shown.

5x – 3y – x + 6z

5x – x – 3y + 6z

5 + 3yz

Describe two mistakes Barry made, and find the correct solution.
__________________________________________________

Answers

Answer 1

Answer:

Step-by-step explanation:

we have that

5x – 3y – x + 6z

5x – x – 3y + 6z------> this step is correct

5 + 3yz------> is not correct

because

1) 5x-x=5---> is not correct

the correct is

5x-x=4x

2) -3y+6z=3yz-----> is not correct

the correct is

-3y+6z=3*(2z-y)

therefore ,

the correct solution is

4x+3*(2z-y)

Related Questions

what is the function of
{(-6,4), (5,-1), (0,3), (-2,4)}

Answers

Answer:

The inverse of f (x) = {(3,2), (5,4), (6,-2), (-5,1)} (function)

1. Erik buys carrots and dip for a class snack. The carrots are $3.80, and the dip is $2.60. Erik has a coupon for 5% off his groceries. He does not need to pay tax. He gives the cashier $20. How much change does he receive back?
2. Liam buys a new TV that cost $360. The TV is on sale for 40% off, and the store is offering an additional 20% off all sale items. How much does Liam save on the TV?

Answers

Answer:

1. $3.80 + 2.60=$6.40 *.05=$5.08  

$20.00-$5.08=$14.92

2. $360 x %40=$14,000

$14,000/100=144   360-144 = 216

$216 x %20 = $4,320/$100= $43.20

$216-43.20= $172.8

$360-$172.80=$187.20

Step-by-step explanation:

$14.92 and $187.20.

Kevin went to see his favorite sports team play. His car can go 400 miles on one tank of gas. If he used 30% of a full tank of​ gas, how many miles did he travel?

(answer this and show your work)
Kevin traveled _answer here_ miles.
​(Type an integer or a​ decimal.)

Answers

Answer: 120

120

Step-by-step explanation:

I honestly can’t explain but I think you have to do this (actually I did the work so I’m right)

P/w = part/whole = ?/400

%/100= percent/100 = 30%/100

These numbers are equivalent

If you don’t understand the top then here is how to do the work-

400x30=12000

12000/100=120

Therefore it’s 120

1.Amit buys a pair of jeans for $33. He must pay 7% sales tax. He gives the cashier $40. How much change does he receive back?
2. Harold buys a backpack that costs $24.80. It is on sale for 25% off. Harold also has a coupon for an additional 10% off the lowest price. What is the final price of the
backpack (not including tax)?
3. Sarah buys a book for her music lessons that cost $24. It is on sale for 15% off, and she must pay 5% sales tax. What is the final price of the book?
4. Erik buys carrots and dip for a class snack. The carrots are $3.80, and the dip is $2.60. Erik has a coupon for 5% off his groceries. He does not need to pay tax. He gives the cashier $20. How much change does he receive back?
5. Liam buys a new TV that cost $360. The TV is on sale for 40% off, and the store is offering an additional 20% off all sale items. How much does Liam save on the TV?

Answers

Answer: The answer is $200

Step-by-step explanation:

Answer:

$200

Step-by-step explanation:

i took the test and got an a

A.) m=5
B.) m= -5
C.) m= 1/5
D.) m= -1/5

Answers

The slope of this line is -5.

Answer:

-5.

Step-by-step explanation:

Look at the picture and answer the question correctly.

Answers

Answer: This would be written in scientific notation which would be            5 x 10 ^ 4.

Help me pleaseguy3gkyubhukydihuxcgh asdi09adsvbgaxi90 bvsaia9

Answers

The first one

Y=1/2x+10
It will be the first one (A)

Which term is a word for a fee that is paid for the use of another person’s money?
time
principal
interest
interest rate

Answers

Answer:

The Correct Term Is Interest

Step-by-step explanation:

Interest is based on some percentage on which the lender lends you money.

Answer:

interest

Step-by-step explanation:

Sarah thinks that the
following expressions are
equivalent:
2x + 3 = x/2+ 3/4
Is she right? If so, prove
that these two expressions
are equivalent. If not, what
error(s) did she make?

Answers

No they are not correct, 3/4 is not equal to 3
No Sarah is not correct. If you replace x with 1, the first equation would equal 5, but the second equation would equal 1. In addition, when she tried to do the inverse operation, she did the inverse operation on the factors, not the operation.

solve for r: q = p(r + s)

Answers

Answer:

[tex]r=\frac{q-ps}{p}[/tex]

General Formulas and Concepts:

Order of Operations: BPEMDASEquality PropertiesDistributive Property

Step-by-step explanation:

Step 1: Define equation

[tex]q=p(r+s)[/tex]

Step 2: Solve for r

Distribute p:                              [tex]q=pr+ps[/tex]Subtract ps on both sides:       [tex]q-ps=pr[/tex]Divide both sides by p:            [tex]\frac{q-ps}{p} =r[/tex]Rewrite:                                     [tex]r=\frac{q-ps}{p}[/tex]

Step-by-step explanation: To solve for r, start by distributing the p

through the parentheses on the left side to get q = pr + ps.

Next, isolate the r term by subtracting ps from both sides to get -ps + q = pr.

Finally, to get r by itself, divide both sides by p and we have -ps + q/p = r.

What is 10.79 x 4.85 =
With the power of ten?

Answers

Answer

1.5403941e+17

Step-by-step explanation:

10.79*4.85=52.3315

52.3315 ^10= 1.5403941e+17

Answer: 1.5403941e+17

PLS HELP ME!!! 10 POINTS FOR THE EXPLAINTION. The question is below:
The largest sandwich ever made weighed 5,440 pounds. If a regular sandwich weighs approximately a half pound, what fraction of a regular sandwich do you get?

Answers

Answer:

1/2

Step-by-step explanation:

You would have 1/2 pounds of the regular sandwich

For each number, determine if it can be written as a fraction. Then state the reason.

please help me

Answers

Answer:

1. No, This is a repeating decimal. (The line means it goes on forever) 2. No, this is a repeating decimal. 3. Yes. This is a decimal that neither terminates or repeats. 4. Yes. This is a decimal that neither terminates or repeats.

Step-by-step explanation:

Hope this helped!

1,2) no because they are repeating decimals
3,4) yes because neither of them are repeating decimals

Please help I need to get a good grade on this!

Answers

The correct answer is 1.5

Which partial quotients could be added to find 396 ➗ 12?
A 20 and 8
B 20 and 4
C 30 and 3
D 30 and 8

Answers

Answer:

divide 396 by 12 & you will get 396/12= 33

Step-by-step explanation:

When one number is divided by another number, the result is the quotient

So I think C) 30 and 3 is the best answer :))

The partial quotient of 396 ÷ 12 is 30 and 3.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

396 ÷ 12

12 x 33 = 396

33 is the quotient.

A partial quotient of 33 can be.

30 and 3.

Thus,

30 and 3 are the partial quotient.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Help asap-----------------

Answers

Answer:

Mean: 652    Median: 83.5     mode: 52    range: 35

Step-by-step explanation:

2. slope help ASAP , thank you

Answers

slope: 5
yint: -3/1 :Dd

Plz Answer This Mathematics Question??? NEED HELP ASAP

Answers

Answer: The answer is 1.00001 meters long

Step-by-step explanation:

Answer:

2 × 10 to the power of -6

Step-by-step explanation:

hope this helps :)

Mrs. Kelly bought a bag of flour that holds 1623 cups of flour. Each loaf of banana bread uses 23 cup of flour.

How many loaves of banana bread can she make?

Answers

Answer:

69 loaves

Step-by-step explanation: (Sorry if you don't understand I am not that good at explaining)

First you need to divide 1,623 by 23 because each loaf is 23 cups of flour.

So 1,623 divided by 23 equals 70.56 but you can't have a fractioned number so it needs to be a whole loaf of bread so she can make 69 loaves of bread

Answer:
70.57 loaves of banana bread
Explaintion:
1,623 ➗ 23 = 70.5652173913043
Rounded: 70.57

Can someone help me with this math question?

Answers

The answer is G because the graph is proportional since the rate is constant

Answer: F the graph shows a proportional relationship

I know this is right, but I don't really understand it and I need you to explain this to me, please?!

Answers

Answer:

x + 2x = 108

Step-by-step explanation:

Let x be the number of oranges sold on Thursday

The number of oranges sold on Friday is twice as many or 2 times x, 2x

The total sold on  the two days is 108.  Add the number sold on Thursday and Friday together and let it equal to 108

x + 2x = 108

So lets say you sold ‘x’ number of oranges on Thursday.On Friday you sold double,therefore ‘2x’. And altogether combining the sales on Thursday and Friday you sold 108 oranges. Therefore if we add the number of oranges sold on Thursday and Friday we will get 108 oranges.
The equation will be: x(number of oranges sold on Thursday) + 2x( number of oranges sold on Friday) = 108 (total number of oranges sold altogether)
x + 2x = 108

Hope it helped! Please mark me as Brainliest!

How many solutions does this equation have?

4m = 5 + 9m

Answers

Answer:

M=1

Step-by-step explanation:

-5M=5

M=1

Which number line models the solution set of -2x + 7 > 17?

Answers

Answer:

Last option

I hope this helps!

Last one is the answer i hope i am right

Please help quickly
Which of the following is a linear function?
A: y = 3x^2.
B: y = 1/3x.
C: y = x^3 + 5.
D: 2/3 x = y - 1

Answers

B is the answer to you problem:)

Answer:

y= 1 over 3x

Step-by-step explanation:

Convert point-slope form to slope-intercept form using the points (3,2) and (4,-2)

Answers

Answer: y=-4x+14

Step-by-step explanation:

The slope (Mx)=-4

And b=14

yeah just help me thank you....

Answers

Answer:

47

Step-by-step explanation:

Plug the numbers in and solve

5 ^ 2 + 2 ( 5 + 6 )

25 + 22

47

also plz mark me brainiest

Answer:

47

Step-by-step explanation:

Each pair of points lies on a line with the given slope. Find y.

Answers

Answer:

3/4

Step-by-step explanation:

If slope is 1/4, you have to assume it is multiplied by x. x in the second coordinate is 3. So you place in

1/4(x)=y

1/4(3)=y

3/4=y

And the other one is incorrect

1/4(x)=y

1/4(7)=y

1 3/4 =y

Hope This Helps

This is due like in 5 minutes. So help me pleasee.

Answers

The slope of the graph is 2

Answer:

m = 2

Step-by-step explanation:

m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]

( - 4 , - 3 )

( - 5 , - 5 )

m = [tex]\frac{-5+3}{-5+4}[/tex] = 2

i need help with this one asap :{

Answers

It’s c hope it helps

What is an equation of the line that passes through the points 8,-3 and 8,4?

Answers

The equation of the line is X=8
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