1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
denis23 [38]
3 years ago
14

Show all your work and how u know its the right answer 6x -3 =21

Mathematics
2 answers:
kondaur [170]3 years ago
6 0

Answer:

x=4

Step-by-step explanation:

6x-3=21

+3     +3      add three to both sides to get the coefficient on its own side

6x=24         (whenever we do something to one side, we do it to the other.)

÷6  ÷6        divide both sides by 6 to get our variable (x) alone

x=4             6x/6=x  24/6=4

elixir [45]3 years ago
3 0
6x-3=21

6x-3(+3)=21(+3) *to cancel 3 out & what
you do to something
on one side of the
equal side you need
to do to the other*

6x=24

6x(divide 6)=24 (divide 6) *to cancel the
6 out,
because you
want x by
itself

x = 4
You might be interested in
Can someone help me this is due soon
Hatshy [7]

Answer:

30

Step-by-step explanation:

3 + 8  + 7 + 2 + 6 + 4 = 30

<em>good luck, i hope this helps :)</em>

3 0
2 years ago
Read 2 more answers
Write the equation of a line passing through the points ​(2​, -4​) and ​(2​, -9​). Write the equation in​ slope-intercept form.
Norma-Jean [14]
1. find our slope: y2 - y1/ x2- x 1

-9 + 4= -5
2 - 2 = 0

m = 0

2. now we need to use our point-slope form to find our y intercept

point-slope form: y - y1 = m(x - x1)

y + 4 = 0(x - 2)

distribute:
y + 4 = 0x

3. get y by itself

y + 4 - 4 = y
0x - 4 = 0x - 4

4. write in slope-intercept form:

y = 0x - 4
OR
y = -4
8 0
3 years ago
8x+3y= 28 and 7x-3y=2<br>solve for x and y simontaniasly using elimination ​
EleoNora [17]

Answer:

x=2, y=4

Step-by-step explanation:

When using elimination, the objective is to elimate one variable. In this case, we see that "y" can easily be eliminated by adding the two equations together since you will get 3y + (-3y) which will eliminate y because the value would become 0, letting us solve for x.

\left \{ {{8x+3y=28} \atop {7x-3y=2}} \right. +\\

Then we get

15x =30, because the y's will eliminated, and 8x+7x is 15x, and 28+2 is 30.

Then divide by 15 on both sides and you get x=2

If x=2, then we can substitute that value into any of the previous given equations and find the value of y.

8×2 +3y = 28

16+3y=28

3y=12

y=4

So the answer to your system of equations would be x=2, and y=4

You can substitute the answers we found to see that they satisfy the equation.

Hope this helped.

6 0
2 years ago
The formula for converting a temperature from degrees Fahrenheit to degrees Celsius is C = (F - 32). What is 86°F in °C?
Vadim26 [7]

Answer:

A

Step-by-step explanation:

(86°F − 32) × 5/9 = 30°C

7 0
3 years ago
Directions: It’s Friday and you and your friends want to make some pizza. You want to make sure that you get the best deal on in
andrew-mc [135]

Answer:

Hello there Rebbecca! I hope you are doing well. If you want to know the answer then just multiply 2 times 400, divide it by 2, add 10, but before you add that tem multiply it by 2 and then boom. Thats what I dont smoke because its bad for your lungs

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Find 5 rational numbers between 1/3 &amp; 2/5​
    7·1 answer
  • A basketball has a volume of 23047 cm
    7·1 answer
  • What value of p makes the equation true?<br> -3p + 1/8 = -1/4
    5·1 answer
  • Write a word problem for this equation $2 x n = $18
    8·1 answer
  • I will give you brainliest if you right down the answer and explain it
    15·1 answer
  • Towns X, Y, and Z are on the same straight road. Town Y is between Town X and Town Z. Town X is 57 miles from Town Z, and Town Y
    12·1 answer
  • Torrie could buy 8 jars of Jiffy peanut butter for $27.12 or 7 jars of Peter Pan peanut butter for $26.53. What is the differenc
    11·1 answer
  • Find the angle measures. Justify your responses. Given: a||b, m1=71º Find m5, m8
    6·1 answer
  • How many solutions does 9 - 5x = 8 - 3x - 1 -2x have?
    10·1 answer
  • Factor the following expression. 36y - 12
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!