Mathematics College

9n - 7 = 5n - 19
What is n and why did you do that

Answers

Answer 1

Answer:

n=-3

Step-by-step explanation:

1) subtract 5n from both sides

2) Add 7 to both sides

3) divide both side by 4

Hope this helps

9n - 7 = 5n - 19What Is N And Why Did You Do That

Related Questions

what is the sum of 7 3/16+3/4​

Answers

Answer:

7 15/16

Step-by-step explanation:

find the same denominator which is 16

3/4x4/4 = 12/16

7 3/16+12/16= 7 15/16

probably bad explanation but hope it helps.. :)

Answer:

Mixed number-7  15/16

Exact form-127/16

Decimal-7.9375

Step-by-step explanation:

What is the simplest form of 4/3

Answers

Answer:

43 is already in the simplest form. It can be written as 1.333333 in decimal form (rounded to 6 decimal places).

You can’t simplify anymore

Please help

Point____is plotted at -4/5​

Answers

Answer:

C

Step-by-step explanation:

-4/5 is -0.8, which is at point C

plz brainliestt

Answer: C

Step-by-step explanation:

Point A is 4/5

Point B is -2/5

Point C is -4/5

Point D -1 4/5

Point D is

What is the volume of this rectangular pyramid?
9 mm
7 mm
7 mm

Answers

it should be 7 mm hope it helps

What is 3 1/4% of 500

Answers

Answer:

387500

Step-by-step explanation:

31/4/100×500

3100/4×500

387500

Marissa counted 29 coins in her change purse which contained d dimes and q quarters. The value of the coins is $5.00. How many dimes and how many quarters are in her change purse?

Answers

Answer:

15 dimes 14 quarters

Step-by-step explanation:

d+q=29

10d+25q=500

10d+10q=290

15q=210

q=14

d=15

Answer:

29 bucks a piece equlas is de 5 dollar tip is de dog and is the rare dollarido ok yes is good dooddood okokokokokkokokokokok so ther is you answar

Step-by-step explanation:

Combine like terms:
3x - 5y - 2x + 3 + 8y + 10

Answers

Answer:

x+3y+13

Step-by-step explanation:

combine like terms

Answer:

Step-by-step explanation:

you will combine the like terms, x, y and numbers

3x-2x=x

-5y+8y=3y

3+10=13

x+3y+13

Help please............

Answers

Answer:

-15 < -9 and |-9| < |-15|  (the third one) is true.

Step-by-step explanation:

-15 is smaller than -9.

The absolute bars cancel out the negative sign.

9 is smaller than 15.

Yea 9 is smaller than 15

The problem
1/3+1 5/6=

Answers

Mixed number form:2 1/6 Decimal form:2.16 exact form: 13/6
The answer is 2.6 or 2 1/6 or 13/6

Can someone help? I don't understand the equasion

Answers

Answer:

a = 1/6

Step-by-step explanation:

To solve, divide both sides by 5 1/4

a = 7/8 / (5 1/4)

a = (7/8) / (21/4)

a= 7/8 * 4/21

a= 28/168

a= 1/6

What is the driving time for a ​2900 mile trip if you drive at an average speed of 50 miles per​ hour? What is the driving time at 69 miles per​ hour?

Answers

58 hours for 50 mph and 42.03 hours for 69 mph


Which ordered pair is a solution of the equation?
7x– 5 = 4y – 6

Answers

Answer:

7x-4y=-11

Step-by-step explanation:

Answer:

Neither in K.A

Step-by-step explanation:

Make sure put some choices before you ask we wouldn't know .

Thank me later !

*GET 30 POINTS IF YOU ANSWER* NEED ASAP! Three students were given the expression shown to simplify. Use the drop-down menus to complete the statements about whether each student's answer is an equivalent expression. Then choose an expression that is equivalent.

Answers

Answer:

The equivalent equation would be 6-2+4x, which could be simplified down to 4+4x

Sophia´s expression is wrong because she did not distribute correctly.

Ursula´s expression is incorrect because she tried adding -4x with 2. This is incorrect because the 2 does not a variable or 2 does not have an x beside it, so you can not add them both together to try to get to the answer.

Step-by-step explanation:

6⁻(2-4x) Given

6(-2+4x) Distributive Property, this is when you multiply everything in the parenthesis that is outside which would be -1 multiplied by -2 and -1 multiplied by -4x.

fill in the blanks _ + _ = 10.5

Answers

Answer:

there can be many answerrrs I guess

.

Step-by-step explanation:

5.25+5.25=10.5

2.5+8=10.5

have a great day :)

Solve using elimination.
5x + 7y = -6
4x + 7y = -9

Answers

Answer:

Simplifying
5x + 7y = -6

Solving
5x + 7y = -6

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7y' to each side of the equation.
5x + 7y + -7y = -6 + -7y

Combine like terms: 7y + -7y = 0
5x + 0 = -6 + -7y
5x = -6 + -7y

Divide each side by '5'.
x = -1.2 + -1.4y

Simplifying
x = -1.2 + -1.4y
__________________________________

Simplifying
4x + 7y = -9

Solving
4x + 7y = -9

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7y' to each side of the equation.
4x + 7y + -7y = -9 + -7y

Combine like terms: 7y + -7y = 0
4x + 0 = -9 + -7y
4x = -9 + -7y

Divide each side by '4'.
x = -2.25 + -1.75y

Simplifying
x = -2.25 + -1.75y

8th Grade
please answer, its due today and show the work please :)
1.6(1 + 0.5n) - 3, 2 = 1.1(n - 6.8)

Answers

Answer:

n = 19.6

Step-by-step explanation:

Given the expression;

1.6(1 + 0.5n) - 3.2 = 1.1(n - 6.8)

Open the bracket

1.6 + 0.8n - 3.2 = 1.1n - 7.48

Collect the like terms

0.8n - 1.1n = -7.48 + 3.2 - 1.6

-0.3n = -5.88

n = -5.88/-0.3

n = 19.6

Hence the value of n is 19.6

Write down the ratio of 450 grams to 15 grams

Answers

Here you go. 30:1 is the answer. Here’s the work.

The ratio of 450 grams to 15 grams is 30:1.

What is Ratio?

A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.

Given:

ratio of 450 grams to 15 grams

So, the ratio is

= 450/ 15

= 30 / 1

Hence, the ratio of 450 grams to 15 grams is 30:1.

Learn more about ratio here:

https://brainly.com/question/13419413

#SPJ2

Identify what property is 17 + 54 + 6?

Identity property

distributive property

commutative property

associative property

Answers

i believe it is the commutative property, hope this helps!

help me, please lol i really need help

Answers

Answer:

honestly I THINK it's the first one

what is the inverse of the relation​

Answers

Y is not = to 1/4x-3

PLZ CAN YOU EXPLAIN HOW YOU SOLVED THE ANSWERS
1) Find the mean
12,13,15,15,16,19,19,19,20,21,25
A) 17.64
B) 19
C) 15

2) find the mean
42,53,54,55,59,59,60,63,65,67,70,71,73
A) 60
B) 59
C) 60.85

3) find the mean
6,6,8,7,10,14,13,6,5,7,8,10,13,6,7
A) 6
B) 8.4
C) 7

Answers

Answer:

1: A) 17.64

2; C) 60.85

3: B) 8.4

Step-by-step explanation:

    May I have brainiest please I'm trying to level up!

                    </3 PureBeauty

Number 1 is A , Number 2 is C , And Number 3 is B. All you have to do is add up all the numbers, then divide by how many numbers there are.

what is 5 1/2+ 2 1/7​

Answers

The answer to that question is 7 9/14

find the unit rate (constant of proportionality) for bobby

Answers

Answer:

Plss this question is Soo blurry I can't read it can u retake this plss?

WHOEVER ANSWERS FIRST GETS BRAINLIEST AND 100 POINTS
0.1*√20000
-0.05*√28800

Answers

Answer:

0.1*√20000 = 14.1421356237

-0.05*√28800 = -8.48528137424

Step-by-step explanation:

The work of Islamic mathematicians, philosophers, and scientists played an essential
role in the start of

Answers

Answer:

The beginning of the philosophy of history

Step-by-step explanation:

Reduce the fractions using the greatest common factor 7 over 12

Answers

Answer:

7/12 cannot be reduced

Step-by-step explanation:

7 = 7

12 = 2 * 2 * 3

7 and 12 have no common factors other than 1, so the fraction 7/12 cannot be reduced. 7/12 is already written in lowest terms.

Please help asap
The sales tax rate is 10%. If Carla buys a handbag priced at $90, how much tax will she
pay?

Answers

Answer: $9

Step-by-step explanation:

10 percent of 9 or 90 broken into 10 parts is 9 also 90 divided by 10 is 9

Helpppppppppppppppppppppppppppp

Answers

Answer:

5

Step-by-step explanation:

4^2+3^2

=16+9=25

[tex]\sqrt{25}[/tex]=5

The answer is D, 5
Hope that helps

In 2009, the world’s largest pumpkin weighed 784 kilograms. An average sized pumpkin weighs 5,000 grams. The 2009 world-record pumpkin weighs ______ kilograms more than an average sized pumpkin

Answers

5000g = 5kg is the answer

Answer:

779 kg

Step-by-step explanation:

5,000 g = 5 kg, 784 - 5 = 779

Mrs. Jones decided to buy some pencils for her class. She bought 5 packages of pencils, and each package contained 42
pencils. There are 14 students in her class and she divided up the pencils so that each student had the same amount of
pencils. If there were no pencils left over, how many pencils did each student get?
OA. 3
OB. 19
O C. 15
OD. 70

Answers

Answer: C

Step-by-step explanation: 5 times 42 equals 210, and 210 divided by 14 is 15! Good luck! :D

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