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
Dmitriy789 [7]
3 years ago
15

What is the solution to this system of equations?4x + 5y = 73x – 2y = –12

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
5 0

Answer:

x = -2 and y = 3

Step-by-step explanation:

It is given that,

4x + 5y = 7    -----(1)

3x – 2y = –12   ----(2)

<u>To find the value of x and y</u>

eq(1) * 3 ⇒

12x + 15y = 21   ----(3)

eq(2) * 4 ⇒

12x - 8y = -48  ---(4)

eq(3) - eq(4) ⇒

12x + 15y = 21   ----(3)

<u>12x - 8y = -48 </u> ---(4)

 0 + 23y = 69

y = 69/23 = 3

Substitute the value of y in eq(1)

4x + 5y = 7    ----(1)

4x + 5*3 = 7

4x = 7 - 15 = -8

x = -8/4 = -2

Therefore x = -2 and y = 3

You might be interested in
Determine whether the relation is a function. Explain why or why not.
Oksi-84 [34.3K]

Answer: THE ANSER IS A. No, the domain value 5 corresponds to two range values, -8 and 5.

Find the domain and range.

Domain:

{ 6 ,  5  , 1 }

Range:

{ − 7 ,  − 8  , 4  , 5 }

Step-by-step explanation: IT'S NOT C OR D

Determine if the relation is a function.

The relation is not a function.

7 0
3 years ago
Find the perimeter (add all sides) of a square when side a= - 41x²
Dafna11 [192]

Answer:

-164x^2

Step-by-step explanation:

The Perimeter of a square is 4s where s is the length of 1 side.

So P=4(-41x^2) 41*4=164 ----> P=-164x^2

5 0
3 years ago
Which function represents the sequence -5.5, -4.75 -4,-3.25... ?​
kumpel [21]
The answer I think should be
C main
3 0
3 years ago
What’s the answer? Because am having a hard time with this math problem.
Studentka2010 [4]

9514 1404 393

Answer:

  34.5 square meters

Step-by-step explanation:

We assume you want to find the area of the shaded region. (The actual question is not visible here.)

The area of the triangle (including the rectangle) is given by the formula ...

  A = 1/2bh

The figure shows the base of the triangle is 11 m, and the height is 1+5+3 = 9 m. So, the triangle area is ...

  A = (1/2)(11 m)(9 m) = 49.5 m^2

The rectangle area is the product of its length and width:

  A = LW

The figure shows the rectangle is 5 m high and 3 m wide, so its area is ...

  A = (5 m)(3 m) = 15 m^2

The shaded area is the difference between the triangle area and the rectangle area:

  shaded area = 49.5 m^2 - 15 m^2 = 34.5 m^2

The shaded region has an area of 34.5 square meters.

7 0
3 years ago
4,6,9,...<br> Find the 8th term.<br> Find the 8th term.
krek1111 [17]

Answer:

4, 6, 9, 12, 15, 18, 21, <u><em>24.</em></u>

Step-by-step explanation:

The 8th term is 24.

just +2 (add 2) every time.

3 0
3 years ago
Other questions:
  • In the given figure, values of x and y, are 1. 40°, 25° 2. 30°, 40° 3. 30°, 20° 4. 40°, 35°
    10·1 answer
  • Maria spent $18 to purchase 24 identical mechanical pencils. What is the cost for one mechanical pencil?
    14·2 answers
  • The measure of angle A is 5 times the measure of its supplement.
    12·1 answer
  • Find two consecutive positive integers such the sum of their squares is 145
    13·1 answer
  • Solve.
    12·1 answer
  • What is the result of subtracting the second equation from the first?<br> -2x+y=0<br> 7x+3y=2
    13·1 answer
  • Can pls someone help with my homework pls I need help
    15·1 answer
  • In a clothing store there are 12 red dresses, 5 blue shirts, and 8 black hats. Write the ratios:
    12·1 answer
  • Given the side measurements. classify the triangle as acute, right, obtuse, or not a triangle. 11, 4, 16
    7·1 answer
  • Decimals from greatest to least <br> .750<br> .475<br> -0.123<br> .675<br> .253
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!