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
kotykmax [81]
3 years ago
9

Elimination 4x+5y=-15 -3x-2y=13

Mathematics
1 answer:
AveGali [126]3 years ago
4 0
Multiply the first equation by 3 and tge second by 4:
12x+15y=-45
-12x-8y=52
then add the equations:
0x+7y=7
7y=7
y=1
so 4x+5(1)=-15
4x+5=-15
4x=-20
x=-5
You might be interested in
Can you help me with this, please?​
Tema [17]

Answer:

its D i do belive

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I NEED HELP PLEASE WITH PART 2, THANKS!
EleoNora [17]

Steps to solve:

-6w - 8 + 15w = 2w - 8 + 7w

~Combine like terms

9w - 8 = 9w - 8

~Add 8 to both sides

9w = 9w

~Divide 9 to both sides

0 = 0

All real numbers are solutions.

Set builder notation: {x | R}

Best of Luck!

8 0
3 years ago
Now that his car is 5 years old, he would like to know whether the variability of gas mileage has changed. He recorded the gas m
Kamila [148]

Answer:

Now that his car is 5 years old, he would like to know whether the variability of gas mileage has changed. He recorded the gas mileage from his last eight fill-ups; these are listed here. Conduct a test at a 10% significance level to infer whether the variability has changed.

Step-by-step explanation:

6 0
3 years ago
What should happen to both sides of the equation to isolate the variable?
LUCKY_DIMON [66]

Answer:

If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal. When you solve an equation, you find the value of the variable that makes the equation true. In order to solve the equation, you isolate the variable

Step-by-step explanation:

5 0
3 years ago
42 customers increased by 50%
Tresset [83]
21 customers because add 21+21 and u get 42
5 0
3 years ago
Other questions:
  • What is the maximum amount of baggage that may be loaded aboard the airplane for the cg to remain within the moment envelope? we
    5·1 answer
  • Kelko, Boris, and Hong have a total of $83 in their wallets. Hong has 2 times what Boris has. Kelko has $7 more than Boris. How
    9·1 answer
  • Graph g(x)= 1/3x^2 and f(x) =x^2
    14·1 answer
  • NEED HELP WITH THIS PROBLEM!!!!!!
    5·1 answer
  • Object a has a mass of 20 g, what is the density?
    7·1 answer
  • Could you Solve. 21r&lt;7<br>​
    11·2 answers
  • A box contains 14 large marbles and 11 small marbles. Each marble is either green or white. 8 of the large marbles are green, an
    7·1 answer
  • Find the slope of the line through the points (10,-6) and (-1,8)
    8·1 answer
  • PLEASE HELP ME ASAP??!!
    11·1 answer
  • Find the first 3 iterates of the function f(x) = 0.80x when x^0= 150
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!