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
In each box is a step in the process of solving a max/min problem like the one in Question 8. Number these steps in order (1-8)
Dmitriy789 [7]

Answer:

The steps are numbered below

Step-by-step explanation:

To solve a maximum/minimum problem, the steps are as follows.

1. Make a drawing.

2. Assign variables to quantities that change.

3. Identify and write down a formula for the quantity that is being optimized.

4. Identify the endpoints, that is, the domain of the function being optimized.

5. Identify the constraint equation.

6. Use the constraint equation to write a new formula for the quantity being optimized that is a function of one variable.

7. Find the derivative and then the critical points of the function being optimized.

8. Evaluate the y-values of the critical points and endpoints by plugging them into the function being optimized. The largest y- value is the global maximum, and the smallest y-value is the global minimum.

8 0
2 years ago
Please help ASAP!
g100num [7]
So all you have to do to solve these problems is substitute the y coordinate and the x coordinate into the equation.

So question 1 would be true because when you substitute the numbers in it equals the y value.

Question 2 is (4, -7)

Question 3 is False

Question 4 is true

Question 5 is true

See if you can do the rest!
8 0
3 years ago
For the function y=12x+6, if the input is x=−4, the output is y=
Sav [38]

Answer:

12(4) +6

48+6 = 54

y=54

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
h = -16t^2 + 541? its been forever since i had to do this and frankly I'm completely lost. please if you answer this can you tea
natta225 [31]
A = -16  b = 0  c = 541
Use the quadratic formula which is
x = [-b +- sq root (b^2 -4*a*c)] / 2*a
x = [-0 +-sq root (0 -4*-16*541)] / 2 * -16
x = + - sq root (0 -4*-16*541) / -32
x = + - sq root (34,624) / -32
x = + - 186.075 / -32

x1 = 186.075 / -32 = <span> <span> <span> -5.81484375 </span> </span> </span>
x2 = -186.075 / -32 = <span> <span> <span> 5.81484375 </span> </span> </span>


7 0
3 years ago
What is the equation of the time that passes through the poin3,2 ani<br> has an undefined slope?
sesenic [268]

Answer:

x=3

Step-by-step explanation:

An undefined slope means it is a vertical line, and every possible point at that line is at x = 3. y does not depend on x, and x cannot be anything other than 3, so the equation is just x=3

4 0
2 years ago
Other questions:
  • Ethan makes $6 per hour mowing lawns and $7.50 per hour bagging groceries. last week, he made a total of $129. The difference be
    10·1 answer
  • Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and th
    9·1 answer
  • george collects 25 baseball cards each month. how many cards will he have at the end of one year?complete the equation to help y
    8·2 answers
  • A pool is filled at a rate of 105gal/min. What is the rate in ml per second
    13·1 answer
  • Nuts cost 0.75 for 3 pounds find the unit rate in dollars per pound
    12·1 answer
  • Write the following as an inequality.
    7·2 answers
  • Solve the equation:<br> (2x^3+5x^2)(1−2x)=0<br> Its says there are two solutions, please explain
    15·1 answer
  • -6 + 16 + 6 + (-16) =
    8·2 answers
  • The temperature at 8:00 am was -10ºF. It rose 15º by noon. At 7:00 pm, the temperature dropped 25º. What was the temperature at
    9·1 answer
  • Answer this please<br>I will Brainlist him/her​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!