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
Stella [2.4K]
3 years ago
10

Algebra

Mathematics
2 answers:
Rainbow [258]3 years ago
6 0
2x + 3y = 12 
2*3 6  x = 3 because 2 times 3 equals 6y = 2 because 3 times 2 equals 6. 6+6=12.
4(3) - 3(2) = 6\/        \/12       6      = 6  

(I'm copy-pasting from the work I just did on another tab. I know the page would reload)
vladimir2022 [97]3 years ago
5 0
(2x + 3y = 12) x (-2)
(4x - 3y = 6) x 1

-4x - 6y = -24
4x - 3y = 6

You can cancel out the x values by adding the two equations together. 
(-4x + 4x) + (-6y - 3y) = (-24 + 6)
-9y = -18
y = 2

Solve for x now...
4x - 3(2) = 6
4x - 6 = 6
4x = 12
x = 3

Check... (x = 3, y = 2)
2(3) + 3(2) = 12 
6 + 6 = 12
12 = 12 <- this works! 

4(3) - 3(2) = 6
12 - 6 = 6
6 = 6 <- this works!
You might be interested in
Which of the following expressions cannot be written as a whole number?
Allisa [31]
9^0 its that answer because all the other number you can make a whole number.
6 0
3 years ago
Read 2 more answers
An observer (O) spots a bird flying at a 35° angle from a line drawn horizontal to its nest. If the distance from the observer (
lara [203]

It’s NOT 16,980

I just took the test

5 0
2 years ago
Which statement is true about the patterns in the two tables ?
MAXImum [283]

Answer: The fourth one

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Brandon sights a helicopter above a building that is 200 feet away at an angle of elevation of 30 degrees. To the nearest foot,
Firlakuza [10]
The problem says that <span>Brandon sights a helicopter above a building that is 200 feet away at an angle of elevation of 30 degrees. So, you can calculate the height asked, by following this procedure:
</span>
 Tan(α)=Opposite leg/Adjacent leg

 α=30°
 Opposite leg=x
 Adjacent leg=200 feet

 When you substitute these values into the formula above (Tan(α)=Opposite leg/Adjacent leg), you have:

 Tan(α)=Opposite leg/Adjacent leg
 Tan(30°)=x/200
 
 You must clear "x":

 x=200xTan(30°)

 Therefore, the value of "x" is:

 x=115 feet
<span>
 How high above the ground the is the helicopter?

 The answer is: 115 feet</span>
4 0
3 years ago
Find the difference (20m+3)-(7m-5)
xz_007 [3.2K]

Answer:

Simplifying

(20m + 3) + -1(7m + -5) = 0

Reorder the terms:

(3 + 20m) + -1(7m + -5) = 0

Remove parenthesis around (3 + 20m)

3 + 20m + -1(7m + -5) = 0

Reorder the terms:

3 + 20m + -1(-5 + 7m) = 0

3 + 20m + (-5 * -1 + 7m * -1) = 0

3 + 20m + (5 + -7m) = 0

Reorder the terms:

3 + 5 + 20m + -7m = 0

Combine like terms: 3 + 5 = 8

8 + 20m + -7m = 0

Combine like terms: 20m + -7m = 13m

8 + 13m = 0

Solving

8 + 13m = 0

Solving for variable 'm'.

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

Add '-8' to each side of the equation.

8 + -8 + 13m = 0 + -8

Combine like terms: 8 + -8 = 0

0 + 13m = 0 + -8

13m = 0 + -8

Combine like terms: 0 + -8 = -8

13m = -8

Divide each side by '13'.

m = -0.6153846154

Simplifying

m = -0.6153846154Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Death Valley is the location of the lowest land elevation in the USA which is 282 feet below sea level.The location with the hig
    9·1 answer
  • On a certain hot summer day, 337 people used the public swimming pool. The daily prices are $1.25 for children and &amp;2.25 for
    15·1 answer
  • What is the explicit rule that can be used to find the number of homes sold in the nth month of the year? (@musiclover pleasee h
    10·1 answer
  • George has 26 coins in quarters and dimes. He has a total of $4.70. How many quarters does he have?
    11·1 answer
  • Seventy-six percent of products come off the line within product specifications. Your quality control department selects 15 prod
    12·1 answer
  • Solve........................​
    7·1 answer
  • Which functions have a vertex with a x-value of 0? Select three options
    7·1 answer
  • Nathan sells posters. He starts with $1,000 and buys 9 posters for $28 each. He sells 5 posters for $42 each. He says that he ha
    12·1 answer
  • Consider the two solids shown.
    5·2 answers
  • PART A: Write a system of linear equations to model this situation where x represents the pizza and y represents the bags of win
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!