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
Keith_Richards [23]
2 years ago
5

Can you answer this math homework? Please!

Mathematics
2 answers:
GREYUIT [131]2 years ago
7 0

Answer:

(3.5, -2)

Step-by-step explanation:

Hi there!

We are given a system of equations, and the value for y is already solved (y=-2)

We want to find the value of x

To do that, substitute -2 as y into either one of the equations in the system (the system has the equations 4x-7y=28 and 6x-5y=31) and solve for x

Let's use 4x-7y=28, although picking 6x-5y=31 is completely fine

Substitute -2 as y into the equation

4x-7(-2)=28

Multiply

4x+14=28

Subtract 14 from both sides

4x=14

Divide both sides by 4 and simplify

x=7/2, or 3.5

We found the value of x in the system

Substitute the values of x and y into a point form (x, y)

The solution is (3.5, -2)

Hope this helps!

luda_lava [24]2 years ago
3 0

Answer: (3.5,-2)

Step-by-step explanation:

To solve this problem, all we have to do is plug in y=-2 into either equations from step one to find the coordinate. To make sure we have the right x-coordinate, let's plug in y for both equations.

4x-7y=28        [plug in y=-2]

4x-7(-2)=28    [multiply]

4x+14=28       [subtract both sides by 14]

4x=14              [divide both sides by 4]

x=3.5

------------------------------------------------------------------------------------------------------------

6x-5y=31        [plug in y=-2]

6x-5(-2)=31    [multiply]

6x+10=31       [subtract both sides by 10]

6x=21             [divide both sides by 6]

x=3.5

Now, we know the solution to the system is (3.5,-2).

You might be interested in
\dfrac k{2}+\dfrac12=3 <br> 2<br> k<br> ​ <br> + <br> 2<br> 1<br> ​ <br> =3
konstantin123 [22]

it's so hard to find it

Step-by-step explanation:

I didn't know

3 0
3 years ago
Read 2 more answers
Hey, babes! Here is a question for today-
Papessa [141]

Answer:

The equation has the form: y = a + b * x where a and b are constant numbers. The variable x is the independent variable, and y is the dependent variable. Typically, you choose a value to substitute for the independent variable and then solve for the dependent variable.

6 0
3 years ago
Write the product as a trinomial.(k – 1)(k – 4)
SashulF [63]
(k - 1)(k - 4)

Use FOIL to solve this.

First
k * k
Outer
k * -4
Inner
-1 * k
Last
-1 * -4

k^2 - 4k - 1k + 4

k^2 - 5k + 4 is the trinomial.
5 0
3 years ago
What number is 15% of 80?<br> use percent proportions
vova2212 [387]
!5% is equivalent to 15 parts over the whole 100 part. It is written in proportions as 15/100. 

Similarly, you need to find how many parts in 80 are equivalent to 15%or 15/100. So, just equate both equation with x as an unknown.

x/80 = 15/100
x = (15/100)*80
x = 12

Thus, the 15% of 80 is 12.
8 0
3 years ago
Can anyone explain how to do this???
Alex73 [517]

Answer:

perimeter is length plus length width plus width

area is length times width

Step-by-step explanation:

(x+4)+(2x-23)=perimeter

(x+4)(2x-23)

hope this helps

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is another name for a pie graph
    10·1 answer
  • Could someone help me out with this?
    14·1 answer
  • Can’t put it Into a question because it is a graph kinda urgent
    10·2 answers
  • if the first and third of three consecutive odd integers are added, the result is 75 less than five times the second integers. f
    7·1 answer
  • Given the following two points calculate the rate of change: (3,10) (7,10)
    8·1 answer
  • Will give brainleist please help ASAP
    14·1 answer
  • Kellie has 7 pages of homework to do. If she can finish 3/4 of a page in one hour, how many hours will
    10·2 answers
  • Can u help with 11 pls. Thank u so much. P.S. sorry it's a little blurry.
    9·1 answer
  • What is 0.0000007 in standard form
    10·2 answers
  • 2x+1 = x-2<br> /3<br> show step by step pls
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!