Mathematics Middle School

Choose the correct algebraic expression to represent: 7 less than n
7 - n
7 + n
n - 7
n + 7

Answers

Answer 1

Answer

n-7

Step-by-step explanation:

it represents 7 less than n because you can subtract less than n because 7 is smaller

Related Questions

write the numerical expression. 6 times the sum of 12 and 8. Write your answer with no spaces.

Answers

Answer:

6(12+8)

Step-by-step explanation:

the word 'times' would indicate the multiplication of 2 numbers

the word 'sum' would indicate the addition of 2 numbers. in this case, 12 + 8 would be placed in parenthesis

hope this helps!! :)

The cost of Mr. Patten's car insurance increased by 5% to $86.82 per month. What was the cost of his insurance before it increased?

a
$91.16
b
$82.69
c
$82.48
d
$81.82

Answers

I think c or b for the problem
I thick c is the one

Write an equation of a line with the given slope 4 and y-intercept -6.

Answers

Answer:

y=4x-6

Step-by-step explanation:

Please mark as brainliest

Answer:

I’m answering so the other dude can have brainliest

Step-by-step explanation:

The reason you couldn’t give it to him was because there was no one to compare his answer with so now there is now plz mark him brainliest

Math HW, please help:
At its maximum speed, a motorboat can travel 10 miles downstream on a river in 20 minutes. It takes 30 minutes for the boat to travel back upstream the same 10 miles, also at maximum speed.
Write a system of two equations that could be used to find the maximum speed of the motorboat in still water. Let b represent the maximum speed of the motorboat in miles per hour and let r represent the speed of the river's current in miles per hour. Convert the times into hours. Solve the system of equations for b and r to determine the boat's maximum speed in still water and the speed of the river's current.

Answers

What is 76+80000000000000000????? I need to know
this is wayyyy to wordy to figure out. I’d check with your teacher about this question.

Shannon’s rectangular countertop is 3 feet wide. It is 3 times as long as it is wide. Find the length and area of Shannon’s countertop. The length of Shannon’s countertop is ?
feet.

The area of Shannon’s countertop is ?
square feet.

Answers

Answer:

9 feet long

Step-by-step explanation:

i need help my math it is hard problem

Answers

there’s no problem to solve?
what’s the question you need help with

What is the value of 2y- 6 if y = 12

Answers

Answer:19

Step-by-step explanation:

The answer is 19 because you need to do 12*2 and then subtract 6. 24-6=19

Answer:

18

Step-by-step explanation:

1.) 2y -6

2 ) 2(12) - 6

3.) 24 - 6

Answer ~ 18

1.) 12 equals y so put 12 in place of y

2.) Using PEMDAS, multiply 12 × 2 which equals 24.

3.) Then you subtract 6 from 24 which equals 18.

CHECK ALL OF THE ONES THAT APPLY AS CORRECT ANSWERS!!! NOT JUST ONE!!!

Four points are graphed in the diagram. Which correctly describe the distances between the points in the graph? Check all that apply.


A coordinate plane with 4 points graphed. Point P is negative 2, 3. Point Q is 4, eleven. Point R is twelve, 3. Point S is 9, negative 1.


( ) PQ = 8



( ) PQ = 10



( ) QS = 12



( ) QS = 13



( ) SR = 5



( ) SR = 6

Answers

Answer:

PQ; 8

QS; 12

SR;5

Step-by-step explanation:

lmk if this is right

Answer:

B) PQ = 10

D) QS = 13

E) SR = 5

This is correct, I just did it.

Error Analysis Your friend incorrectly factors the expression below as ​6x(3-4​xy). Factor the expression below correctly. What error did your friend​ make?

18x-24xy

Answers

Answer:

dum

Step-by-step explanation:

Answer: The error made was that the x from 24xy wasn’t taken out. Because if you multiplied 6x and -4xy it would NOT equal -24xy. So what she should done was also 6x(3-4y)



Explanation:

Find the GCF, which is 6x

6x(3-4y)

This is the correct way to factor it.



Water is filling a swimming pool at a rate of 7 gallons per minute. Complete the table of equivalent ratios for the first 5 minutes of the swimming pool filling up.

Answers

Answer:

1:7 2:14 3:21 4:28 5:35

Step-by-step explanation:

Every minute that goes by is 7 more gallons added to the swimming pool. So in the first 5 minutes it would increasingly get fuller at 7 gallons a minute

Help me please I really do need help tho

Answers

Answer: What musickp8809 said

Step-by-step explanation: Give him brainliest, bc that's what i want for christmas.

THIS IS DO TODAY I NEED HELP PLS

Answers

Answer: $9.99

Step-by-step explanation:

2=$4

2/2=1

4/2=2

$2+$8 =10$

Answer:

D.$9.95

Step-by-step explanation:

If you divide the cost of 2 pairs of socks in half which is $3.98 you would get $1.99 which is the cost of 1 pair of socks and then you would multiply $1.99 by 5 to get $9.95 which would be the cost of 5 pairs of socks.

super hard for me ill give a brainliest if its right

Answers

Answer: -6 degrees C i'm not sure sorry

Step-by-step explanation:

I believe -6 hopes this helps bby

Please help I will mark brainliest if you explain the correct answer

Answers

Answer:

172 kilo

Step-by-step explanation:

I added all numbers together and got my answer.

172 kilograms,all you have to do is add all of them up to find the total

Solve for x: -243 = -9(10 + x)


I will reward Brainliest

Answers

Answer:

x = 17

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

-243 = -9(10 + x)

Step 2: Solve for x

Divide -9 on both sides:                    27 = 10 + xIsolate x:                                             17 = xRewrite:                                              x = 17

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x:                    -243 = -9(10 + 17)Add:                                     -243 = -9(27)Multiply:                               -243 = -243

Here we see that -243 does indeed equal -243.

∴ x = 17 is the solution to the equation.

How can you determine the sale price if you are given the regular price and the percent of markdown

Answers

Answer:

Step-by-step explanation:

Take original price divide by one hundred multiply that by percentage, subtract what you get from original price and that’s your sale price

Answer:

let's say the price is 400 dollars

and the percent of markdown is 20%

100-20=80

400x80=32000

32000/100= 320

The price will be 320 dollars.

What transformation occurred between the set of points below?
A(-8,7) ► A'(-7-8)
B(-4.7) →B'(-7,-4)
C(-6,2)((-2,-6)
A
A reflection over the x-axis
B
Reflection over the y-axis
С
90° clockwise rotation
D 90° counterclockwise rotation

Answers

Given:

A(-8,7) → A'(-7-8)

B(-4,7) → B'(-7,-4)

C(-6,2) → C'(-2,-6)

To find:

The transformation occurred between the set of points above.

Solution:

From the given set of points it is clear that the rule of transformation is

(x,y) → (-y,x)            ...(i)

Because in the given set of points we interchange the x and y coordinates, then we are applying negative sign in the x-coordinate.

If a figure reflection over the x-axis, then

(x,y) → (x,-y)

If a figure reflection over the y-axis, then

(x,y) → (-x,y)

If a figure rotated 90° clockwise, then

(x,y) → (y,-x)

If a figure rotated 90° counterclockwise, then

(x,y) → (-y,x)

Only this rule of transformation is same as (i). So, the figure is rotated 90° counterclockwise.

Therefore, the correct option is D.

a triangle has side lengths of 10 cm and 7 cm. which could be the value of the third side, 18 cm or 11 cm

Answers

Answer: 11cm

Step-by-step explanation:

11cm

{7TH GRADE} Create four (4) problems that include fractions. Solve the problems using estimation.
Each problem must contain:
at least three (3) fractions
two (2) must include addition of fractions
two (2) must include subtraction of fractions.
an explanation of your reasoning process for each problem

Answers

1/4 +2/3 =
3/4 - 1/7
6/8 / 9/12

The temperature outside is currently −8°F. Write a subtraction problem showing how many degrees the temperature would need to change in order to reach 7°F.

Answers

Answer:

7 - (-8) = 15

Step-by-step explanation:

It would need to change by 15 degrees.

It would need to be subtracted by 15 degrees

Pls help I really need it

Answers

Answer:

20

Step-by-step explanation:

Use the equation

45%x=9

Divide by 45% on both sides to get 20

The answer would have to be 20

List all the factors of the numbers: a. 40 and b. 3

Answer fast

Answers

40 - 1,2,4,5,8,10,20,40
3 - 1,3
40- 1,2,4,5,8,10,20,40
3-1,3

Plss help with these 2 math questions!!! i will give brianliest to the best CORRECT answer

Answers

1a-It would be impossible to send astronauts to the sun because of the extreme heat.

1b-Humans do not yet have the technology to send them to other planets, that’s why it has not been done.

1c.”They” was not specified, so therefore the question cannot be answered. but one possible “they” would be the astronauts on earth there for being ((((1AU from the sun))))

2- 6.727AU


if your teacher does not like those answers maybe he/she should learn how to better word question.
it would stay the same, however far they are now it wouldn’t change if they switched sides with each other

HELP ME PLZ QUICKLY
If your tree is 12ft tall and your uncle's is 6ft tall and he used 650 lights how many would you use

Answers

ummmmmm. yes ❤️.........

Answer:

1300

Step-by-step explanation:

if your uncle has used 650 lights but ur twice the hieght then youve used double so 1300 is your answer

will mark brainliest please help

Answers

Answer:

The rules that shows a(n) enlargement is B. (x,y) >>> (3x, 3y)

Hope this helped you out!

if it wrong, im sorry ;v;

It’s 3x, 3y because it’s multiplying making an enlargement

Solve the system of equations by substitution. Write your solution as an ordered pair
x+2y=-2
y=-2+11

Answers

Answer:

hello

Step-by-step explanation:

djh;vkajhkjbcbvusiwihalkjfbih

X+2(-2+11)=-2. plug in y
X-4+22=-2 distribute 2
+22 +22 Subtract +22
———————-
X-4=20
+4. +4. Add 4 to both sides

Answer is X=24

ASAP Please answer Part B Question 2.

Answers

Answer:

6

Step-by-step explanation:

Divide 18 by the total number of parts in the ratio (1+2=3)

Since the ratio of stores to other buildings is 1 to 2, 6 is your answer, as it is a third of 18.

The answer is 6, I’m trying to help as many ppl as I can I’m sorry I can’t explain

Help me solve this. ASAP

Answers

Answer:

I don't know..

Step-by-step explanation:

Jackie needs to save $125 to go to a concert. He has saved $35. He makes $7.50 an hour at his job.

Let x representing the number of hours.

Which equation and solution can be used to show how many hours jackie must work in order to have enough money to go to the concert?

A. 125x + 35 = 750; x = 5.75
B. 35 - 7.5x = 125; x = 6
C. 7.5x + 35 = 125; x = 12
D. 35x + 125 = 750; x = 18

Answers

Answer:

C

Step-by-step

Answer:

Answer is C

Step-by-step explanation:

First Jackie needs to save $125

y = 125

He already saved $35, this is our constant

He makes $7.50 an hour on his job,

Our variable x is hours

125 = 7.50x + 35

If we solve for x, we get x = 12

David bought three candy bars for $2.45. Assuming that each candy bar is the same price, what is the unit rate for the cost of the candy bars? Be sure to round your answer to the nearest hundredth.

Answers

Answer:

$4.55

Please give me the brainliest!

Hope this helps!

Answer:

It would cost David $0.82 per candy bar.

Step-by-step explanation:

Other Questions
Can someone help me with this science question like uhm!??!? anyone Argue the importance of chemistry to the field of materials science.(short answer) Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagneticspectrum?A) Wavelength and frequency decrease.B) Wavelength and frequency increase.C) Wavelength increases, and frequency decreases.D) Wavelength decreases, and frequency increases. pls help 7th grade math. what is the value of (-4)^2+6(3+4)(2)-5?A Disney world B the legend of zelda breath of the wildC Christmas tree D ELMER'S glue What did the pope ask Europeans to "participate in" against the Muslims in 1099 and why? Define the following terms:- vanishing point- orthogonal- picture plane Tell about a holiday you didnt enjoy (just a few sentences) Is -2=-2 a true or false statement Which verb form is an example of the future perfect tense? A. gone B. will go C. will be going D. will have goneWILL MARK BRAINLIEST !!!!!!!!!!!!!!!!!!!!!! ASAP Pluto has a volume of about 6,390,000,000 kilometers. What is this distance in scientific notation? What characteristic do atoms in the same group of elements share?1 - they have the same number 2 - they have similar physical property3 - they have the same atomic mass 4 - the same number of electrons orbitals is the square root of 13/16 rational? NEED HELP ASAP WILL GIVE BRAINLIST When building a house, the number of days required to build is inverselyproportional to with the number of workers. One house was built in 56 days by 11workers. How many days would it take to build a similar house with 28 workers? uhh ill give brainliest?? I dont know if this is correct or not !!!!!!! Please HELP !!!!!!!!! Will mark Brianliest !!!!!!!! what was one unifying influence in western europe after the fall of rome A.the growing Catholic church B.the rural agricultural community C.the common latin language D.the sense of loyalty to rome What do the Amoses keep of Bud's so that he doesn't steal anything? Write and solve an equation for seven less than foutimes a number is 29. Shoppers buy a 12 lb turkey for $15. They want to make a 35% profit on the sale/price of the turkey? how much is it then?