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
worty [1.4K]
2 years ago
12

Find the solution of this system of equations. Separate the x- and y-values with a comma. x - 4y = 9 and x - y = -9

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
4 0
X - 4y =  9 ------- (1)
x - y = -9 ---------(2)

(2) - (1):
-y - (-4y) = -9 - 9
-y + 4y = -18
3y = -18
y = -6 . -------- sub into (2)

x - (-6) = -9
x + 6 = -9
x = -9 - 6
x = -15

Ans: x = -15, y = -6

You might be interested in
The sum of the lengths of two sides of a triangle is always greater then the length of the third side.
Tanya [424]

Answer:Triangle Inequality Theorem. The sum of the lengths of any two sides of a triangle is greater than the length of the third side

Step-by-step explanation:

5 0
3 years ago
Joan has a credit card that uses the previous balance method. The opening balance of one of her 30-day billing cycles was $6390,
Gekata [30.6K]

It would be something that looks like this:

((6390 * 0.17)/365) x 3


3 0
3 years ago
Read 2 more answers
Evaluate the expression when c=9 and d=8. 4c+d<br><br><br><br><br>please help ​
guapka [62]

Answer:

44

Step-by-step explanation

4c + d

this is an expression and since they provided c and d it is easy to solve

c = 9 and d = 8. You need to plug in c and d into the expression to solve the problem.  

4(9) + (8)

4 times 9 is 36 so it leaves you with 36 + 8

36 + 8 = 44

I hope this helps but basically the concept is just plugging in the numbers in place of the variables. For future problems plug in the numbers given where the variables are.

7 0
3 years ago
How do I show my work for 25 x 3/5=15​
stepladder [879]
Cut 25 with 5
5x3 = 15
15 = 15
5 0
3 years ago
If a = 4 and b = 2, what is the value of the following expression?
Nadya [2.5K]

Answer:

D) 30

Step-by-step explanation:

3(a + 4b)-6 = 3 ( 4 + 4*2) - 6

                  = 3( 4+8 ) - 6

                  = 3*12 - 6

                  = 36 - 6 =30

3 0
3 years ago
Read 2 more answers
Other questions:
  • Y=4x+1 <br> Do x and y vary directly?
    15·1 answer
  • PLSSSSSSSS HELP (2 + 7i) - (6 + 8i) + (10 - 10i)
    5·1 answer
  • 4. The revenue of a company for a given month is represented as ????(x) = 1,500x − x^2 and its costs as ????(x) = 1,500 + 1,000x
    5·1 answer
  • 25 mi/h=_____ft/s 32 gal/min=_____qt/h 425 ft/h=_______in./min please help !!! :(
    15·1 answer
  • An experienced cashier at a grocery store takes 2 seconds to scan each item and 40 seconds to process the customer's payment. 1)
    14·1 answer
  • Mort makes. Beaded necklaces that he sells for $32 each. About how much will Mort make if he sells 36 necklaces at the local fai
    9·1 answer
  • In circle N, KL ≅ ML.<br><br> What is the measure of ?<br> 77°<br> 90°<br> 132°<br> 154°
    13·2 answers
  • What is a.missing term in each proportion 6:n = 8:12
    11·2 answers
  • 10(8r+23) =1430 <br> HELP PLS ITS FOR MY HW PLS PLS PLS
    5·1 answer
  • PLEASE HELP ME FIND X please I really need help
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!