Mathematics High School

Solve for x. Show your work: x + 3 = 12

Answers

Answer 1

Answer:

x=9

Step-by-step explanation:

The objective is to get x by itself, so to do that we need to subtract three from both sides:

x + 3 = 12

      -3    -3

12-3= 9.

So, x=9.

Hope this helped!

Answer 2

Answer: x=9

x+3=12

1x+3=12

      -3

   =9

1x =9    --->  1x/1   9/1

/1   /1    --->  1x/1   9/1

x=9

Step-by-step explanation:

sorry if this doesn't make sense

Related Questions

Is this figure a triangle?

Side A:3 cm

Side B: 4 cm

Side C: 5 cm

explain the terms of length on the side

Answers

Step-by-step explanation:

Not because that not same number

i would keep this up but i figured it out and now i understand

Answers

Answer: Ok then i'm happy for you!

Step-by-step explanation:

Can someone help me with this

Answers

Gamma mart because it has the lowest price
I think the answer is Beta Mart

A company orders 24 boxed lunches from a deli for $238.80. If each boxed lunch costs the same amount, what is the unit cost of each boxed lunch?

Answers

Answer:

$9.95

Step-by-step explanation:

$238.80 ÷ 24 = $9.95

$238.80 ⇾ The final cost of boxed lunches altogether.

24 ⇾ The number of boxed lunches bought.

$9.95 ⇾ The unit price of boxed lunches after dividing the final cost($238.80) by the amount bought(24).  

Hope this wasn't confusing. o(^▽^)o

✨Hope this helps✨

What is the x-intercept ?

Answers

Answer:

-3

Step-by-step explanation:

Select the location on the number line to plot the point -2 1/2 and 6 1/2. I just need the answer ​

Answers

Answer:

move one line from the negative 3 for -2 1/2 and one to the left from 7 for 6 1/2

Step-by-step explanation:

Answer: The answer provided is correct

Step-by-step explanation:

Ayuda con esto tengo muchos deberes y nececito terminarlos ahora, por favor ayuda :( .María y Nancy son vecinas, y todas estas semanas han realizado compras en el mercado. La semana pasada María gastó 25,75 dólares, exactamente 3 veces más de lo que gastó Nancy, que tenía poco que comprar. ¿Cuánto dinero se gastó Nancy?

Answers

Answer:

Nancy gastó 8,58 dólares.

Step-by-step explanation:

Para calcular cuánto dinero gastó Nancy, debemos hallar la relación entre Nancy y María, tal como sigue:

[tex] M = 3N [/tex]    (1)

En donde M es por María y N por Nancy

En la relación de la equación (1) tenemos que el dinero que gastó María es 3 veces lo que gastó Nancy, tal como dice el enunciado.

Entonces, podemos hallar ahora cuánto gastó Nancy:

[tex] N = \frac{M}{3} = \frac{25,75}{3} = 8,58 [/tex]

Por lo tanto, Nancy gastó 8,58 dólares.  

Espero que te sea de utilidad!

5 ( 3x - 2) = 4 ( 2x + 1)

Answers

Answer:

15x-2=8x+1

13x=9x

i think that's correct im not sure but i hope to help u :)

5(3x-2)=4(2x+1)
(15x-10)=(8x+4)
7x-10=4
7x=14
X=2
Explanation:
I multiplied everything inside the parenthesis by the number on the outside, making the equation 15x-10=8x+4, then I combined like terms, so I subtracted 8x on both sides and added 10 to each side, making the equation 7x=14, this means that 14/7 and 7/7 is the last step, which leaves you with the answer of x=2

Xavier is driving home. He starts 250 miles from home and his car can travel 28 miles per gallon of gasoline he uses. Xavier stops at a rest stop that is 100 miles from home. Let g be the amount or gas he has used at that point. Set up and solve an equation for how much gas Xavier used to get to the rest stop.

Answers

Answer:

For 100 miles he uses 3.571 gallons of gasoline.

In equation form it is y/x*100

Step-by-step explanation:

Unitary Method

He travels 28 miles per gallon of gasoline.

For 1 mile he uses  1/28 gallons

For 100 miles he uses 1/28 * 100= 100/28= 3.571 gallons of gasoline.

Let x be the miles and y be the gallons of gasoline used to travel x miles.

Then for 1 mile  the gallons of gasoline used will be y/ x gallons.

For 100 miles  the gallons of gasoline used will be y/x *100 gallons.

In equation form it is y/x*100 gallons for 100 miles where x is the number of miles and y is the amount of gallons.

I need help!!! Can you put this in order for me !

Answers

Answer:
7=2x+4
3=2x
X=3/2

Helppppppppp i will mark you as a Brianlist

Answers

Answer:

I would say 23

Step-by-step explanation:

From 13 to 17 they add 4 then from 17 to 21 they add 4 so 21 plus 4 does not equal 23

Answer:

16, 25, 36

Step-by-step explanation:

there's a lot lol

2p + 3 = 5 - 6p
what is the value of p in the equation?

Answers

Answer:

p=1/4

Step-by-step explanation:

original: 2p+3=5-6p

move variable to one side: 2p+6p=5-3

combine like terms: 8p=2

answer :p=2/8

simplify answer (final answer): p=1/4

2p+3=5-6p

2p+6p+3=5

2p+6p=5-3

8p=5-3

8p=2

Answer: p=1/4

Which describes the slope of the given line?

Answers

Answer:

Negative

Step-by-step explanation:

I hope this is right!

Negative is that answer negative is a line that travels downward from left to right.

3x + 5 = 6x – 13
please please help!

Answers

Answer:

Simplifying

3x + -5 = 6x + -13

Reorder the terms:

-5 + 3x = 6x + -13

Reorder the terms:

-5 + 3x = -13 + 6x

Solving

-5 + 3x = -13 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.

-5 + 3x + -6x = -13 + 6x + -6x

Combine like terms: 3x + -6x = -3x

-5 + -3x = -13 + 6x + -6x

Combine like terms: 6x + -6x = 0

-5 + -3x = -13 + 0

-5 + -3x = -13

Add '5' to each side of the equation.

-5 + 5 + -3x = -13 + 5

Combine like terms: -5 + 5 = 0

0 + -3x = -13 + 5

-3x = -13 + 5

Combine like terms: -13 + 5 = -8

-3x = -8

Divide each side by '-3'.

x = 2.666666667

Simplifying

x = 2.666666667

Step-by-step explanation:

Answer:

x = 6

Step-by-step explanation:

Which of the following groups of numbers are integers?
A-4, 8, -54, 29
B-22,1/2,0,88

C 25, 89, 16, -5

g. 3/8 22, 19,0

Answers

A and C are the correct answers
a - 4,8,-54,29
b- 22,1/2,0,88

Can anyone answer this by sending a photo with 20-30 different numbers in a set so that I can do a project by making a class chart? This is in my Prob/Stats Class. All I need is the set of numbers; the rest I can do. Thank you!
This is for 30 points.

Answers

Answer:

i figured out how to attach lol

Step-by-step explanation:

Help me for a brainllest. A theater holds 2,680 seats. The lower level has 100 less than 2 times as many seats as the upper level. The middle level has 80 more than 3 times as many seats as the upper level. How many seats are in the middle level?

Answers

Answer: 1430

Step-by-step explanation: x + y + z = 2680  

x = 2z - 100  

y = 3z + 80  

x + y = 5z - 20  

6z - 20 = 2680  

z = 450  

y = 1430  

Solution:  

x = 800, y = 1430, z = 450

Answer:

1430

Step-by-step explanation:

In a group of 34 students, 11 study both Art and Biology.
15 study Biology but not Art.
4 study neither subject.
Given that a randomly selected student studies Art, what is the probability the student studies Art and Biology?

Answers

Answer:

32.35% is the answer

Step-by-step explanation:

^^^

You are 5 1/4 feet tall. You must be at least 5 3/4 feet tall to ride a roller coaster. Which inequality represents how much taller you must be to ride the roller coaster?​

Answers

Answer:

Not quite understanding but it could possibly be 5 1/4<5 3/4.

5 1/4 + 1/2= 5 3/4= 5 3/4

Step-by-step explanation:

Select all that are equivalent to: (-12x-8)/4
3x-2

​
1/4 (12x+8)​

-(12x+8)/-4
-3x-2−3x−2

-3x+2−3x+2

Answers

All that are equivalent to (-12x-8)/4 is:
•A
•B
•C

Enter the number in standard notation.
5.39 x 105=?

Answers

Answer:

539,000

Step-by-step explanation:

539,000 is 5.39x10^5

V I’m please help I already posted this but I did this answer

Answers

Answer: m+1

Step-by-step explanation:

Write the phrase as an expression. Then simplify the expression.
7 plus the sum of a number 2 and 5
expression for the phrase:
simplified expression:

Answers

Answer:

7+2+5

7+7

7+7=14

-----------

Can you please help solve this problem Find m

Answers

Answer:

where is your question boy /girl tell me

I=prt solveing for t​

Answers

Answer:

t= i/pr

Hope this helps!!!!!!!!

7 plus twice a number.

Answers

Answer: 7 +2x

Step-by-step explanation:

7 plus twice a number

Twice a number - 2x

7 plus 2x

Find the slope of the line through each pair of points.

(1,19) , (1,-7)

Answers

Answer:

undefined (that's the actual answer)

Step-by-step explanation:

guys help ME OUT
Compare the rental car costs, C(200) and T(200). Which car company, Speedy or Tom's Car Rentals, offers a better price for a one day rental, given that the car will be driven exactly 200 miles?

Answers

what is the central dogma of biology

Answer:

Tom's Car Rentals

Step-by-step explanation:

S: 0.10(200) + 41 = 61

T: 0.25(200) = 50

It is evident that Tom's Car Rentals holds the better deal.

This is what I said on my homework:)

help I forgot how to do these questions
​

Answers

A x > 10 is the answer

What represents 60=5 x 12?

Answers

Answer:

multiplication

Step-by-step explanation:

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