3(n + 7) i need this in step by step pls help me

Answers

Answer 1

Answer: 3n+21

Step-by-step explanation: it’s the distributive property so you multiply the number outside the parentheses times the numbers or number inside the parentheses

Answer 2

Answer:

3n+21

IF the question required =0 then move the 21 to the other side

and divide both sides by 3 and x would equal to -7

Step-by-step explanation:

3(n+7)

use the distributive property, so multiply 3 with n and 7

3n+21


Related Questions

Which one is longer?

Aslinky that is 26 inches long
Bslinky that is 2 feet long
C they are equal

Answers

Answer: A.

Step-by-step explanation:

Slinky A is 26 inches there are 24 inches in two feet so slinky B isn’t longer. Then they are obviously not equal because we figured out they have different lengths

3
11/
Will the solution (-3, -7) make the following system of equations a true statement?
y = 4x + 5
y = x - 4

Answers

Yes
-7=4(-3)+5
-7=-12+5
-7=-7

-7=-3-4
-7=-7

Solve 4+x/7=2 50 points

Answers

Answer: 4 x − 7 = 2 4x-7=2 4x−7=2. Add 7 to both sides. Simplify 2 + 7 2+7 2+7 to 9. Divide both sides by 4.

Step-by-step explanation:

Answer:

x=-14

Step-by-step explanation:

4+x/7=2

-4       -4

x/7=-2

*7    *7

x=-14

-7.2 as a mixed number.

Answers

Lzkdfkfjejwjekerjfif

Answer:

7 1/5                 

Explanation:

Rewrite the decimal number as a fraction with 1 in the denominator

7.2=7.2/1

Multiply to remove 1 decimal places. Here, you multiply top and bottom by 10^1 = 10

7.2/1×10/10=72/10

Find the Greatest Common Factor (GCF) of 72 and 10, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 2,

7/2÷2/10÷2=36/5

Simplify the improper fraction,

=7 1/5

In conclusion,

−7.2=−7 1/5

Hope it helped. :)

Simplify 8(x - 4)

8x - 4
8x - 32
x - 32
x - 4

Answers

Answer:

8x-32

Step-by-step explanation:

multiply 8 with both terms

8(x-4)8x-32answer is option b

please mark this answer as brainlist

Mike rides his bike with a constant speed of 16km/h. How long will he take to travel 32 kilometers?

Answers

2 hrand 33min...,....

A tree in leilas backyard has been growing for 3 1/5 years. It is 3/4 meters tall how many meters per year?

Answers

Answer:

The tree grew 15/64 meters per year.                  

Step-by-step explanation:

Given

Length of a tree = 3/4 metersTotal time taken by the tree to grow 3/4 taller = 3 1/5 or 16/5 years

To determine

Per year growth of the tree in meters

Per year growth of the tree in meters can be determined by dividing the total length of a tree i.e. 3/4 meters by the total time taken by the tree to get 3/4 taller.

Per year growth of tree = Total Length  / Total time to grow

                                       = 3/4 ÷ 16/5

                                        = 3/4 × 5/16

                                        = [3×5] / [4×16]

                                        = 15/64 meters

Therefore, the tree grew 15/64 meters per year.                  

Three years ago, claire borrowed money from her father to pay for a class trip. She agreed to pay him 6% simple annual interest on the loan. Now she owes him 90$ in interest, plus the principal amount. How much did Clare borrow? The answer is 500, but how did you get that answer correctly? Step by step can u show me?

Answers

Answer:

Below

Step-by-step explanation:

6% simple annual interest on the loan for 3 years so 6x3=18

So the interest of the whole amount is 18%, so now you got to find what of 18% is 90

This looks like (initial amount)x(number)%=(final amount)

x=initial amount

number%=18

final amount=90

All percentages are just number%/100. So we have either 18/100, or .18 depending on how you want to work it.

So now we do 90÷0.18 which gives you the answer 500

Elena rode her bike 2 miles in 10 minutes. she rode it at a constant speed.

1. how many minutes did it take elena to go ONE mile?

2. how many minutes did it take for elena to travel 24 miles?

Answers

Answer:

1         5 minutes

Step-by-step explanation:

2       120 minutes

can u help pretty pls and fast thank you

Answers

Answer: 20% Percent Discount

Step-by-step explanation:

$800.00 - $640.00=$160.00 / $800.00= .2 or 20%

PLZ HELP ME ASAP PLZ

Answers

Answer:

14

Step-by-step explanation:

5×2²-2-4

5×4-2-4

20-2-4

18-4

14

Answer:

Rewrite the absolute value equation as four equations without absolute value bars.

5z−2=z+65−2=−(z+6)−(5z-2)=z+6−(5z−2)=−(z+6)

After simplifying, there are only two unique equations to be solved.

5z−2=z+65z−2=−(z+6)

Solve

5z−2=z+6 for z.

Tap for more steps...

z=2

Solve

5z−2=−(z+6)for z.

Tap for more steps...

z=−23

List all of the solutions.

z=2,−23

The result can be shown in multiple forms.

Exact Form:

z=2,−23

Decimal Form:

z=2,−0.6

Step-by-step explanation:

it is 0.6

What is the measure of angle R?

Answers

Answer:

65

Step-by-step explanation:

The inside of a triangle is 180 degrees and the other two angles are the same so 50+65+65 =180. The answer is 65

(EASY MULTIPLE CHOICE I BEG YOU)

Answers

1) its number 2. 30x^7y^4

Use the bar graph to answer the question.



What was the third most favorite communication method chosen?



Question 2 options:

A.cell phone call

B.e-mail

C.instant message

D.cell phone text

Answers

Answer:

A

Step-by-step explanation:

the graph shows It's the 3rd tallest

Rewrite the function f(x)=4(x-2)²-8 in the form f(x)=ax²+bx+c.

Answers

Answer:

lma ooo how many times did you post

4x^2 - 16x + 8

Step-by-step explanation:

4(x-2)^2-8

4(x-2)(x-2)-8

4{x^2-4x+4}-8

4x^2 - 16x +16 - 8

4x^2 - 16x + 8

What is the equivalent expression for 4(2b+3c?

Answers

8b + 12c would be the answer.
You have to distribute the 4 to each of the two terms inside of the parentheses.

(Please help!!)

The length (l) of a tet angular box is 5 centimeters more than twice its width (w).

Write an equation to represent the length of the rectangular box.

Answers

L=5+2w would be the best answer

Which point best indicates the location of V45on the number line below?
A.Point A
B.Point B
C.Point C
D. Point D

Answers

Point d because the v45 amount it’s parole to this number:(-272on)::

A small black cloth bag holds two red counters, two green counters, two
blue counters, and two black counters. All are the same size. Without
looking into the bag, what is the probability of drawing a red counter then
a black counter from the bag without replacement? *

Answers

Answer:

1/14

Step-by-step explanation:

P(red, then black) = [tex]\frac{2}{8}[/tex] · [tex]\frac{2}{7}[/tex] = [tex]\frac{4}{56}[/tex] = [tex]\frac{1}{14}[/tex] (simplifed form)

Plz answer im stuck on this question

Answers

Answer:

It b

Step-by-step explanation:

can u rate it brainliest

help me with this pls​

Answers

Answer:

I'm not sure I'm too lazy to do it lol

Step-by-step explanation:

Please help me with this question it is part of a bigger problem but i just need help with this part PLZ will mark BRAINLIEST

Answers

Answer:

Step-by-step explanation:

If X is 3 then it is

3 times 3 times 3 times 3 times 3

I don't know what is x or black sorry (-.-)

A rectangle has a perimeter of 46 inches. The length of the rectangle is 7 inches. What is the rectangle width?

Answers

Answer:

W=16

Step-by-step explanation:

46=2(L+W)

46=2(7)+2(W)

46-14=2W

32/2=2W/2

W=16

find the value of each expression for n = 2.​

Answers

Answer:

1. 22

2. 22

3. 28

Step-by-step explanation:

Substitue the n in each expression with two, then solve the problem for the value

8 Line segment AB, measuring 130 feet,
represents the slant height of the square
pyramid. Line segment AC represents
the altitude of the pyramid.
130 ft
B
240 ft
What is the length of altitude AC?
(8.1A, 8.16, 8.10, 8.1, 8.1F)
F 120 ft
G 50 ft
H 75 ft
J 60 ft
Use an unnercnon
.

Answers

The answers it going to be 60 that’s what my friend thinks

Answer:

the answer isnt 60 because i got that question wrong its 50

Step-by-step explanation:

This question is 15 points and please help me! Each answer is different. Please put it in order and don't scam this is my last points thanks so much!

Answers

Answer:

What are all the opions

Step-by-step explanation:

Also I think its

1.  communtive, asscotive

2. Disvision Property

3. to the left side ( I think)

Hope this helps and sorry about your points ;-;

UGENT! Please help due in 10 minutes :c I tried but I just..never got it..

Answers

Answer:

#19:the rule is every-time use the number and times it by 80%

#20:using a calculator, i got 16. i think it is wrong, but that is what i got.

anybody knows what to do ...​

Answers

Answer:

put them in goo gle they are chemicals they shoulf bting up a picture

Step-by-step explanation:

Which is equivalent to 243 Superscript two-fifths?

3
6
9
12

Answers

Answer: Answer is 9

Step-by-step explanation:

Answer:

the answer to this question is C. 9

Step-by-step explanation:

A principal of $2900 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 14 years?

Answers

Answer:

$6774.4

Step-by-step explanation:

Given data

P=$2900

r= 6.25%

t= 14 years

A=???

The compound interest formula is given as

A=P(1+r)^t

substiute

A= 2900(1+0.0625)^14

A= 2900(1.0625)^14

A= 2900*2.336

A= $6774.4

Hence the final amount is $6774.4

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