Mathematics High School

simplify the equation 8 + 3n = 20​

Answers

Answer 1

Answer:

N = 4

Step-by-step explanation:

20 - 8 is 12.

12/3 is 4 :)

Answer 2
8 + 3n = 20
Take away 8 from both sides.
3n = 12.
Divide both sides by 3.
n = 4

Related Questions

CAN SOMEONE PLEASE GIVE ME THE ANSWER TO QUESTION 6? PLS ILY

Answers

Answer:

12.5

Step-by-step explanation:

We want to find 1/8 of 100 so we would write it as 100÷8 to get 12.5

Now we know that 12.5 is equivalent to 1/8 but let's double check.

12.5×8 is 100

1/8 ×8 is 8/8

100=8/8

Can someone plz help me with this one problem plz!!!!

Answers

Answer:

x  |  y

3  |  0

4  |  1

5  |  2

6  |  3

Step-by-step explanation:

If 5x + 4y= 13 and 4x + 5y = 14, find the value of (x - y).​

Answers

Answer:

x - y = - 1

Step-by-step explanation:

Given the 2 equations

5x + 4y = 13 → (1)

4x + 5y = 14 → (2)

Subtract (2) from (1) term by term , that is

(5x - 4x) + (4y - 5y) = 13 - 14

x - y = - 1

Answer:

x = 1

y = 2

x - y = -1

Step-by-step explanation:

5x + 4y= 13,   then 4y = 13 - 5x, then y = (13 - 5x)/4

4x + 5y = 14

substitute for y:

4x + 5(13 - 5x)/4 = 14

simplifying:

4x + (65 - 25x)/4 = 14

4x + 16.25 -6.25x = 14

-2.25x = -2.25

x = 1

y = (13 - 5)/4 = 2

Which equation has exactly ONE solution?
A) 3 + 10x / 2 = 4x + 2
B) 15x − 5 / 3 = 5x + 4
C) 2 + 6x / 2 = 3x + 1
D) 4x − 10 / 2 = 2x − 5

Answers

Answer:

the answer is d.

Step-by-step explanation:

please mark brainliest

Answer:

I don't know  because

Step-by-step explanation:

A= -1

B)= 17/30

C)= has no solutions

D)= 0

hi i will mark brainliest if at least 2 are done:)

Answers

Answer:

[tex]3x+18x+5x-2=180\\26x-2=180\\26x=182\\X=7[/tex]

[tex]<D=21\\<E=126\\<F=33\\[/tex]

[tex]16x+13x+16x=180\\45x=180\\X=4\\[/tex]

[tex]<G=64\\<H=64\\<I=52\\[/tex]

[tex]X+8+6x-5+2x-3=180\\9x=180\\X=20\\[/tex]

[tex]<J=28\\<K=115\\<L=37\\[/tex]

Step-by-step explanation:

Solve the system of equations.
12x - 5y = –20
y=x+4
2 =
Y=

Answers

Answer:

Solution :

{x,y} = {0/14261512,4}

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = x + 4

// Plug this in for variable y in equation [1]

[1] 12x - 5•(x +4) = -20

[1] 7x = 0

// Solve equation [1] for the variable x

[1] 7x = 0

[1] x = 0

// By now we know this much :

x = 0

y = x+4

// Use the x value to solve for y

y = (-0/14261512)+4 = 4

Answer:y = (-0/14261512)+4 = 4

Step-by-step explanation:[2]    y = x + 4// Plug this in for variable  y  in equation [1]

  [1]    12x - 5•(x +4) = -20   [1]    7x = 0// Solve equation [1] for the variable  x

  [1]    7x = 0

  [1]    x = 0 // By now we know this much :

   x = 0    y = x+4// Use the  x  value to solve for  y

   y = (-0/14261512)+4 = 4 Solution : {x,y} = {0/14261512,4}

find the value of x in the given figure​

Answers

Answer:

x = 32

Step-by-step explanation:

(2x + 60) + (3x - 40) = 180  because they are supplementary angles

5x + 20 = 180

5x = 160

x = 32

The diameter of a circle is 4 units.
What is the radius of the circle?
units

Answers

Answer:

radius = D/2

Step-by-step explanation:

radius= 4unit/2

=2unit

pls help question is on picture

Answers

Answer:

25 degrees

Step-by-step explanation:

5 * 5  = 25

Can someone please help me on this question ASAP!!!!! ‘What is the gradient of the blue line?’

Answers

Answer:

4

Step-by-step explanation:

change in y/change in x

rise/run

4/1

= 4

Answer:

up 4 right 5 and up 8 right 6

Step-by-step explanation:

Steve invests $1,800 in an account that earns 3.7% annual interest, compounded continuously. What is the value of the account after 10 years? Round your answer to the nearest dollar. A. about $2,466 B. about $2,589 C. about $2,601 D. about $2,606

Answers

Answer:

B. about $2,589

Step-by-step explanation:

Given data

P=$1,800

R= 3.7%

T=10years

The expression for the compound interest is given as

A= P(1+r)^t

substitute

A= 1800(1+0.037)^10

A= 1800(1.037)^10

A=1800*1.43809495884

A=$2588.570

Hence the answer is  B. about $2,589

Multiple Choice. Which of the following fractions is equivalent to 6/15
2/7
4/10
1/2
1/4

Answers

Answer:

the answer that is equivalent to 6/15 is 4/10

An equation is shown. 21t = 252

Answers

Answer:

t = 12

Step-by-step explanation:

252 divded by 21 =

[tex]12[/tex]'

PLEASE HELP
What is the formula to find a square pyramid?

Answers

Answer:A Square Pyramid is a pyramid with a square base. Square Pyramid Formula : Area of Base (A) = s² Surface Area of Pyramid = s² + 2sl = A + 2sl Volume of Pyramid = (1/3)b²h

Step-by-step explanation:

Simplify the equation. n ÷ 12 = 11​

Answers

Answer:

n=132

Step-by-step explanation:

Answer:

132

Step-by-step explanation:

n/12=11

n=11*12

n=132

Tessa grabbed a quick bite to eat during her lunch
break. She purchased an $8.50 sandwich and a
lemonade for $1.99. She tipped the barista 15%
and paid a 6% sales tax. Note: The sales tax and
tip are each based on the cost of the food and
drink, only.

Answers

Answer:

2x power of 3+4x−3

Step-by-step explanation:

Identify four tables that show a proportional relationship. Giving correct answer brain and 5 stars!!!

Answers

Answer:

The correct answer is A

Step-by-step explanation:

Forget about the decimal nd think about quarters 1 quarter is 25 2 is 50 3 is 75 and 4 is 1.00

Answer:

The answer is A if I understand the question correctly.

Step-by-step explanation:

hellooop

what is the y-intercept of the graph shown below?

Answers

Answer:

-7 :) hope this helps

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

To find the y intercept find where the line crosses the the x axis at zero so for this graph it crosses at (0,-6) making the y intercept -6

A big-screen TV that previously sold for $2,400 has been marked down to $2,040. What is the original price?

Answers

Answer:

easy $2,400

Step-by-step explanation:

Mike just opened a checking account at the bank. He asked for a debit card Instead an ATM card. What will Mike be able to do with a debit ca
that he could NOT do with an ATM card?
Select the best answer from the choices provided.
Ο Α.
transfer money
OB.
deposit money
C.
withdraw money
OD.
purchase an item

Answers

Answer:

the answer is d

Help me please!!! I will give Brainly if correct!
If you go 540 miles in 27 hours, how many miles per hour are you traveling?
75 mph
20 mph
35 mph
5 mph

Answers

Answer:

B, 20mph

Step-by-step explanation:

540 miles in 27 hours is 540/27 = 20 miles in 1 hour. This is 20 mph

Answer:

B. 20 mph

Step-by-step explanation:

You're gonna divide the total distance traveled in the time it took to find how much time it took per hour

540/27 = 20

There are 12 people in a tournament. Each player must play against every other player. How many games will be played?

Answers

Answer:

6

Step-by-step explanation:

A player will play against every OTHER player meaning that you will play against 6 players.

What is the slope-intercept equation for the line below?

Answers

Answer:

Answer is C

Step-by-step explanation:

4. Find the value of x.
A 7
B -7
C 3
D 3.5


Answers

Answer:

l got 7 sorry if it is not the answer

Step-by-step explanation:

2x+12=5x-9 two will come to the other side n become 5x-2x=3x then 9 will go to the other side n become 12+9=21

3x=21 then divide both sides by 3

what times 3 equals 4?

Answers

Answer:

heres your answer 1.3333

IF KLMN is a rhombus, and m angle KLM=80^ , what is the m angle 1

Answers

Answer:

angle 1 = 100°

Step-by-step explanation:

Given:

∠KLM = 80°

Find:

angle 1

Computation:

∠KLM + angle 1 = 180°

80° + angle 1 = 180°

angle 1 = 100°

Nora has a action figure collection consisting of 180 action figures she keeps on the wall and 220 she keeps in a display case. What percentage of Nora's action figure collection does she keep on her wall?

Answers

Answer:

45%

Step-by-step explanation:

Answer:

hey is nora selling them , pls give her number

Step-by-step explanation:

karen is building a house in Norfolk, Virginia. She would like a bedroom that is 12 feet in length by 10 feet in width. What is the area of the bedroom?

Answers

Answer:

POINTFARMER.EXE=EZ

Step-by-step explanation:

Answer:

120 feet^2

Step-by-step explanation:

Pls help ASAP and ill give brainliest

Answers

Answer:

81 lbs of raisins

Step-by-step explanation:

make a ratio

3 x

-- = ---

2 54

solve for x by cross multiplying

162= 2x

x= 81 lbs of raisins

Find the probability of 3 successes in 7 trials of a binomial experiment in which the probability of success in any one trial is 35%.
Please HELP!!!!!!!!!! ILL GIVE BRAINLIEST!!!! To first to answer.

Answers

Answer:

.268   i rounded

Step-by-step explanation:

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