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
Novosadov [1.4K]
3 years ago
13

What is the solution to this system: 4x+9y=28 - 4x-y=-28

Mathematics
1 answer:
Degger [83]3 years ago
6 0

Answer:

x = 7

y = 0

Step-by-step explanation:

→To solve this, you can use the elimination method. To do this, you must have one set of variables that can cancel each other out. In the problem given, we already have positive 4x and -4x, making them cancel out:

4x + 9y = 28

-4x - y = -28

__________

8y = 0

y = 0

<u>→Plug in 0 for y, into an equation:</u>

-4x - 0 = -28

-4x = -28

x = 7

You might be interested in
I NEED HELPPPPP. SOMEONE ANSWER THISSSS
Inga [223]

Answer:y=415 x = 21.5

Step-by-step explanation:

We can see 4x-37 = 49

4x = 86

x = 21.5

4(21.5) -3 = 83

Then we can see what the other side is because they are equal

y/5 = 83

83 x 5 = 415

y=415

3 0
3 years ago
Read 2 more answers
Find the Z score of 78 with a mean of 75 and standard deviation of 4
kompoz [17]
Meld,elellelee,lee,”d,d
6 0
3 years ago
4(3x+2y) distributive property pls help
Sonbull [250]

Answer:

12x+8y

Step-by-step explanation:

1) Expand by distributing terms.

4*3x+4*2y

2) Simplify 4*3x to 12x.

12x+4*2y

3) Simplify  4*2y to 8y.

12x+8y

<u>Therefor, the answer is </u><u>12x + 8y.</u>

8 0
2 years ago
What is the rate of change of the function y = − 1/4 x + 1
scoray [572]

Answer:

-1/4

Step-by-step explanation:

Hello!

The rate of change is also known as the slope.

Standard equation of a line: y = mx + b

  • y: output
  • m:  slope
  • x: input
  • b: y-intercept

So, if we match the standard form to the given function:

  • y = mx + b
  • y = -1/4x + 1

-1/4 is m, or the rate of change.

8 0
2 years ago
URGENT!! ILL GIVE<br> BRAINLIEST!!!! AND 100 POINTS!!!!!
Naddik [55]

The value of angle x is 113 degrees and y is 67 degrees.

What is angle?

In euclidean geometry, an angle is that the figure shaped by 2 rays, referred to as the perimeters of the angle, sharing a typical end point, referred to as the vertex of the angle. Angles shaped by 2 rays exist the plane that contains the rays.

Main body:

Given ;

∠C = 62°

∠A =51°

according to triangle sum property: Sum of angles of triangle is 180°

Using it,

62° +51° +∠y = 180°

113°+ ∠y =180°

∠y = 67°

∠x is equal to the sum of interior opposite angle ,so using it we get:

∠x = 61°+52°

∠x = 113°

Hence the value of ∠x is 113 degrees and y is 67 degrees.

To know more about angle , visit:

brainly.com/question/25770607

#SPJ1

4 0
1 year ago
Other questions:
  • What is the common factor of x^2-9 and x^2+x-6?
    8·1 answer
  • Janet invested $10,000, part at 2% and part at 12%. if the total interest at the end of the year is $600, how much did she inves
    9·1 answer
  • Eight of the 24 students in your class have an insta account
    9·1 answer
  • write an equation in slope intercept form of the line that has the same slope as y=3x-2 and passes through the point (7,25)
    7·1 answer
  • Simplify, and then write in exponential form. Do not evaluate.<br> (7^2)^4
    7·2 answers
  • Please Help!!:<br> Sorry for the image quality.
    10·1 answer
  • The average rainfall in Annette, Alaska, in September is 0.31 inch per day. 1 point
    11·1 answer
  • Jenny bought 4 DVD's for $25.20. What was the unit rate?
    14·2 answers
  • Can someone please help
    14·1 answer
  • Find the slope of the line that passes through (-70, 84) and ( 69, -1).​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!