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
bogdanovich [222]
3 years ago
7

How many solutions does y=2x+2,4x-2y=4 have?

Mathematics
1 answer:
Leni [432]3 years ago
8 0
Write as a system y= 2 x + 2.4x - 2y = 4

{y = 4
{2x + 2.4x - 2y = 4

Substitute the value of y into the equation

2x + 2.4x - 2 x 4 = 4

Solve the equation

x= 30/ 11

A possible solution is

(x, y) = (30/11, 4)

Check the solution

4 = 2 x 30/11+ 2.4 x 30/11 - 2 x 4 = 4

Simplify the expression

4 = 4 = 4

The ordered pair is a solution

(x, y) = ( 30/11, 4)



You might be interested in
I need help with this! Which one is it?
bija089 [108]

Answer:

82 degrees

let the point where the lines cross be E

ABD angle is 108 / 2 = 54 degrees

CAB angle is 56 / 2 = 28 degrees

the missing angle in ABE triangle is 180-54-28=98 degrees. angle x is 180 - 98 = 82

6 0
2 years ago
Read 2 more answers
4. Why do people sometimes use credit to pay for items instead of just using cash?
Makovka662 [10]

Answer:

Some people use credit to pay for items instead of just using cash so they do not have to carry money around and so it is easier. ... It is preferable to receive a low interest rate so you do not have to pay high amounts. Sometimes, lenders allow or require a down payment before they extend you the loan.

7 0
2 years ago
Read 2 more answers
In triangle DEF, side DE is 3 inches, side EF is 4 inches, and sides DF is 5 inches. The largest angle is opposite which side.?
zimovet [89]
The longest angle would be across from the one with the longest side. In this case it would be across from DF
4 0
2 years ago
Read 2 more answers
Which translation maps the vertex of the graph of the function f(x) = x onto the vertex of the function g(x) = x2 + 2x +1?
Jlenok [28]
I’m gonna be honest I don’t know
5 0
2 years ago
A cone is inverted and filled with water to of its height. What percent of the cone's volume is filled with water
wlad13 [49]

The 75% of the cone's volume is filled with water.

According to the statement

we have to find that the What percent of the cone's volume is filled with water.

So, For this purpose, we know that the

Cone is the surface traced by a moving straight line that always passes through a fixed point (the vertex).

So, Form given information

Let's call the height of the cone  " h " and the area of its base  " a ".

volume of cone  =  (1/3)(a)(h)

The water will also be in the shape of a cone, with a height that is 3/4 that of the container.

volume of water  =  (1/3)(a)(3/4 * h)

volume of water  =  (3/4) * (1/3)(a)(h)

volume of water  =  (3/4) * volume of cone

volume of water  =  75% of the volume of cone

So, 75% of the cone's volume is filled with water.

Learn more about cone's volume here

brainly.com/question/1082469

Disclaimer: This question was incomplete. Please find the full content below.

Question:

A cone is inverted and filled with water to 3/4 of its height. What percent of the cone's volume is filled with water?

#SPJ4

8 0
1 year ago
Other questions:
  • Please Help Me Prove This
    15·1 answer
  • The curves r1(t) = 2t, t2, t3 and r2(t) = sin t, sin 5t, 3t intersect at the origin. Find their angle of intersection, θ, correc
    6·1 answer
  • Alexis drove 1200 miles in 30 h. What was her rate of travel in miles per hour?
    5·2 answers
  • Help asap plz, hehdbjdnejxjfbrjdjcnbd
    9·2 answers
  • Who can help with my geometry b final exam
    15·2 answers
  • Find the product of (2/3)x and (1/2x²)+6x-3​
    12·1 answer
  • Ill give brainley to right answer
    8·1 answer
  • Find the sum of 2/5 and 4/10
    9·2 answers
  • If a square has sides that are x units long, in terms of x, what is its perimeter? please help!
    12·1 answer
  • Express tan O as a fraction in simplest terms. * . N 5 10 0 M​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!