Mathematics Middle School

Maria said that -4n + 3 +9n - 4 is equivalent to 4n. What error did maria likely make?

Answers

Answer 1
Maria combined all of the factors, which were not all like terms. She should’ve did -4n+9n and 3-4 to get 5n-1
Answer 2

The error that Maria did was combining all the factors in the algebraic expression without collecting the like terms to a particular side to solve for the variable (n).

What is an Algebraic expression?

Algebraic expression involves solving numbers with variables with the use of arithmetic operations e.g.

AdditionSubtractionMultiplicationDivision

Claim:

Maria Said that:

-4n + 3 + 9n - 4 = 4n

If we ignore the like terms and assume all numbers have a variable (n);

Then, we have:

-4n + 3n + 9n - 4n = 4n

Learn more about Algebraic expressions here:

https://brainly.com/question/4344214

Related Questions

Sara used a number line to add. She started counting at 10, and then she counted until she was over the number –4 on the number line. If Sara is modeling addition, what number did she have to add to 10?
Explain and show your reasoning.

Answers

Answer:

-14

Step-by-step explanation:

She added a -14 because if you have 10 and you add a -14, you will get -4

what is the slope of the line on the graph?

-1

-2

Answers

2/2 which = 1 whole is the slope

Ms. Garland bought x number of shirts for the new members of her chorus. The cost for X number of shirts, including $3.99 shipping was $77.49. Each shirt cost $12.25. There was no sales tax on this purchase. Which equation could be used to find X?
A. 3.99(x + 12.25) = 77.49

B. 3.99x + 12.25 = 77.49

C. 12.25 (x + 3.99) = 77.49


D. 12.25x + 3.99 = 77.49

Answers

77.49 - 3.99 = 12.25 * x

73.5 = 12.25x
(Divide both sides by 12.25)
6 = x
So, she bought six shirts.

Answer:

b

Step-by-step explanation:

will give branliest and 10 points please answer with correct work

Answers

Answer: Part A the answer is yes and Part B the answer is no.

Step-by-step explanation:

Part A when you divide 7 by 2 you get 3.5 and if you multiply that number by the rest of the numbers and you get the number beneath the other number.

Part B when you divide 8 by 5 you get 1.6 and if you multiply that number by the rest of the numbers and then you don't get the number beneath the other number.

Danche!

Sorry I’m not sure about this one

PLEASE HELP!!!!!!
idk

Answers

Answer:

5cm is a correct answer

Answer:

5

Step-by-step explanation:

80/16

help plz math is so hard

Answers

is this 2 different questions?
Answer for the table is y= x multiplied by 2


Answer for the graph is y= x multiplied by 3


Hope this helps!!

HIYYEEEEEEEEEEEEEE!!

Answers

hoiiiiiiiiiiiiiiiiiiiiiii

hihihihihihihihihihhihihihihihi

Which equations show direct variation

A) 6*x=1/y

B) 6*y=1/x

C) 6*x=y

D) x=6-y

Answers

B i think I’m not sure
I think it A or B not sure

I would like to ask anyone if they would mind helping me if they could explain in a way that makes sense, how to find the y-intercept with two points... please help me, google tells me how but my head hurts and it makes no sense TwT ty in advance!!

Answers

Answer:

Ok so the two points that are given need to be in the form of y2-y1 over x2-x1, meaning the x value from the second set of points needs to be subtracted from the x value from the first set of points, and it is the same for the y values. Then that gives you the slope. You add the slope to the equation y=mx+b. The slope is m, so you put the slope in the m spot. If the slope were 3, it would look like y=3x+b because it is in the m spot. Then, you can choose any 1 set of points given and plug it into the equation. I am going to use the slope 3 , like the last example, and plug it in with the set of points. Say the point was (5,2), you will plug the x value, which is 10 in the situation, next to the the slope. The slope will then be 3(5). Then you will plug in the y value, which is 2, into the y place. At the end, the equation will look like this: 2=3(5)+b. Then you multiply 3 and 5, which is 15, and subtract 2 and 15 which will give you -13. The answer will then be -13=b. That is the y-intercept.

Step-by-step explanation:

hey! if you have the equation, for example:

y=3x+4

the y-intercept would be 4! this is an easy hack to use if you already have the equation. in an equation, the number on the very end will always be your y-intercept if it is correctly written in slope intercept form.

if you do not have the equation but have the points, the y-intercept would be the point on the line that touches the y-axis first.

for example:

the line crosses through the 3rd line on the y axis. your y-intercept would be 3. it is the point in which your line crosses on the y-axis line that goes up and down the middle of the graph.

comment on my answer if you have any questions! hopefully this helps.

Solve 3 + 4x > –5 for x.
Will Mark Brainliest

Answers

Answer:

x > -2

Step-by-step explanation:

to get 4x alone, we have to subtract 3 from -5

-5 - 3 = -8

4x> -8

-8/4 = -2

x>-2

Answer: x > -2

Step-by-step explanation:

Easiest question
Please help

Answers

Step-by-step explanation:

If its so easy why dont you do it?

Answer:

yea if it easy y cant u do it

Step-by-step explanation:

If you found a company that paid 6% interest but only compounded your money once per year, how much money would be in your account on your 18th birthday? Show all your work.

Answers

6% of a thousand = 60 so,
60 x 18 = 1080

sorry I’m out of points I need to do this

which symbol would make this statement true?
3 __ 4 __ 5
1. =
2.
4. ≤
5. ≥

Answers

number 2

Step-by-step explanation:

4 is greater than 3, 5 is greater than 4.

4 is the answer you are looking for

The equation of a line given two points needs to be found. Samuel claims that slope-intercept form will generate the equation and Helena claims that point-slope form will find the equation. Who is correct? Explain your reason by describing both forms.

I know the answer. Just want to see if its close to anyone elses.

Answers

Both answer are correct plz mark me brainlyest

Answer:

The answers below are all right :D

Step-by-step explanation:

My answer: Both are correct because to find the equation u need both the pointslope form and slope intercept form.

Short Answer: Both Samuel and Helena are correct.  Both forms result in the same equation.  Slope-intercept uses slope and a point to find the y-intercept.  Point-slope uses slope and a point to solve for y to form the equation.

Sample Response: Both are correct. Using either form will result in the same equation. The slope-intercept form uses slope and a point to find the y-intercept. Point-slope form uses the slope and a point to solve for y to generate the equation.

Brainliest plz

A company manufactures two types of cabinets, type 1 and type 2. It produces 110 total cabinets each week. Last week, the number of type 2 cabinets produced exceeded twice the number of type 1 cabinets produced by 20. If x is the number of type 1 cabinets produced and y is the number of type 2 cabinets produced, the system of equations that represents this situation is x + y = 110 and y = 2x + 20. The number of type 2 cabinets produced last week is . This number exceeds the number of type 1 cabinets produced during the week by .

Answers

Answer:

I am not 100% on this but i think it is 65

Step-by-step explanation:

I believe the answer is 65. Hope this helps

Can I combine these terms? If so, what would the answer be? 5x+9x

Answers

Yes, because they are like terms. So the answer would be 14x (like normal addition since it’s like terms)

Answer:

yes you can and it would be 14x

NEED HELP ASAP
WILL GIVE BRAIN

Answers

Step-by-step explanation:

1question

we know that

force=m.a

= 50×5

= 250 N

THEREFORE 250N force should be applied

Please explain in complete sentences
Explain how you might go from gallons to cups using more than one conversion factor.

Answers

Answer:

You go from Gallons to Quarts To Pints To Cups

Step-by-step explanation:

1G= 4Q= 8P= 16C

it goes gallons to quartz to pints to cups

12 divided by 1/2 is

Answers

the answer is
12/2 = 6
I got 24

Explanation:

12 divided by 1/2 =
12= whole number
1= Numerator
2= Denominator
To make it a fraction form answer, you multiply the whole number by the denominator and make the result the new numerator. The old numerator becomes the new denominator:
12x2/1 = 24/1
Thus, the answer to 12 divided by 1/2 in fraction form is 24/1
But to make the answer 12 divided by 1/2 in decimal form, you simply divide the numerator from the fraction answer:
24/1 = 24

Pleas Help!!!
|2s-7|≥-1

Answers

Answer:

\frac{1}{2}s=\frac{7}{2}

Step-by-step explanation:

Answer:

s=− 2/7 =−3.500

Step-by-step explanation:

Which ordered pair (x, y) can be added to the table so that y is still a function of x?

Answers

Answer:(17,8)

Step-by-step explanation:

Answer:

(1,1)

Step-by-step explanation:

A function cannot contain two points with the same x-value.

Not sure what the answer is. Please don't answer if you're not sure what the answer is. Thanks!

Answers

Answer:

Is c

Step-by-step explanation:

The answer is C. Your welcome

pls help me I need the right answer

20 pts pls​

Answers

X=75
All the angle have to add up to 540°

The table shows the relationship of how many pounds of pecans are needed to make a certain number of pies:

Number of Pies: 3 6 9

Pounds of Pecans: 2 4 6


Which graph below shows plots of equivalent ratios for this situation?


(Photos go from A to D.)

Answers

Answer:

Its A, I hope this helps

The answer should be D

You bought 5.5 lbs of Hamburger meat and you want to make .25 lb burgers, how many burgers can you make if you use all 5 1/2 lbs?

Reasking because need a correct answer (no offense to who answered before)
Dividing decimals

Answers

Answer: 22 burgers

Step-by-step explanation:

5.5 / 2.5 = 22
5.5 Divided by 2.5 = 22

Drag each equation to show if it could be a correct first step to solving the equation 8(x + 5) = 56.

Answers

Answer:

8x+40=56

Step-by-step explanation:

You have to distribute the 8

Then finish the rest of the problem

Suppose f(x) = x^2 - 8
Evaluate f(2) - f(-3)

Answers

What grade are u at

I hope this is right

Your friend sells you a bicycle for ​$63 Your friend sells you a bicycle for ​$21 The total cost is 150% of what your friend spent originally. How much did your friend spend​ originally? How much money did your friend earn by selling the bicycle and helmet to​ you? Your friend originally spent ​$_________

Answers

Answer:

Originally Spent: $56

Money Earned: $28

Step-by-step explanation:

63+21=84

(Blank)*3=84

84/3=28

84-28=56

A line passes through the points (–3, –4) and (6, 2).

Answers

Y=2/3x-2
That’s what I got if it’s wrong I’m sorry haven’t done this kind of work in 1 maybe 2 years

Answer:

-3

Step-by-step explanation:

The x-intercept is 3, here's why

First, you need to get the slope

y2-y1

--------

x2-x1

You should get 2/3

Next, you need to use y=mx+b

y= 2/3x+b

2= 2/3(6)+b       You get 6 and 2 from the coordinates

Once this is worked out you'll get y=2/3x-2

To get the x intercept you need to set y equal to 0

0=2/3x-2

Add 2 to each side

0-2 = 2/3x

Multiply each side by 3/2 to isolate x

-2 *3/2 = 2/3x * 3/2

-3 =x

The x intercept is -3

Hope this helped, Brainliest appreciated :)

Mrs. Morales polled 100 math students on the first day of school and found out that math is the favorite subject of 65% of the students. What fraction of her students did vote for math as their favorite subject?

Answers

H will be my answer if not im sorry
the answer is f. it is 65/100 which is simplified to 13/20.
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