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
Elena-2011 [213]
3 years ago
6

What is the value of x in the solution of the system of equations below?8x-y=20Y=3x​

Mathematics
2 answers:
SashulF [63]3 years ago
5 0

Answer:

32-12=20 or x=4

Step-by-step explanation:

This is basically saying 8x-3x=20

so first you want to do 8x-3x to end up with 5x

then from there you have the equation..

5x=20

in order to figure out what x is you need to divide 20 by five so you just have the x and get rid of the 5

so 20 divided by 5 = 4

this means x=4 but you need to plug it into the equation

8x= 8 times 4 = 32   and   3x= 3 times 4 = 12

so 32-12=20

tatyana61 [14]3 years ago
4 0

Answer:

x=4

where y =3x

8x-3x=20

5x=20

5x/5=20/5

x=4

You might be interested in
What is the slope of the line shown below?
Dima020 [189]

Answer:

A. -2/7

Step-by-step explanation:

slope = rise/run = 2/(-7) = -2/7

3 0
3 years ago
PLEASE HELP!!!! Will give brainliest
pashok25 [27]

Answer:

Trapezium:

perimeter= 232

area= 2052

Triangle:

perimeter= 221

area= 4088

Step-by-step explanation:

6 0
3 years ago
How many solutions does the system have?<br> 3x + y = 8<br> 2 + 2y = 8
REY [17]

Answer:

x=2,y=2

Step-by-step explanation:

This question is a simultaneous equation

So let's solve

3x+y=8...(1)

2x+2y=8....(2)

Multiply (1) by 2

6x+2y=16...(3)

Substrate (2) From (3)

4x=8

Let's make x the subject of formula by dividing both sides by 4

x=2

So let's substitute the value of x into (1)

3x+y=8

3(2)+y=8

6+y=8

y=8-6

y=2

Therefore x is 2,y is 2

3 0
3 years ago
In this assignment, you will explore how the volume is changed when you adjust the height or radius of a cylinder. You will drag
lesantik [10]

The volume of a cylinder changes when you adjust the height or radius as the volume either increases or reduces.

<h3>How to illustrate the volume?</h3>

Let's assume that the height and radius are 14cm and 7cm. The volume will be:

= πr²h

= 3.14 × 7² × 14

= 2154.04cm³

When the radius and height are reduced to 5cm and 9cm, the volume will be:

= πr²h

= 3.14 × 5² × 9

= 706.5cm³

This illustrates that the volume reduces when the height and radius reduces.

Learn more about volume on:

brainly.com/question/1972490

#SPJ1

8 0
2 years ago
What is the value of x?
Licemer1 [7]

Answer:

D. 16

Step-by-step explanation:

1. Because these are vertical angles (opposite pair of angles that are formed by intersecting lines), these are congruent. That means (8x-8) = (7x+8).

2. (Solving)

Step 1: Subtract 7x from both sides.

  • 8x-8-7x=7x+8-7x
  • x-8=8

Step 2: Add 8 to both sides.

  • x - 8 + 8 = 8 + 8
  • x = 16

Step 3: Check if solution is correct.

  • 8(16)-8=7(16)+8
  • 128-8 = 112+8
  • 120 = 120

Therefore, the answer is D. 16.

5 0
3 years ago
Other questions:
  • What is the surface area of the right cone below?
    14·1 answer
  • The temperature and Vancouver Yesterday was 15° today it is -5° how much did the temperature decrease?
    10·1 answer
  • 4 less than a number is more than 3
    14·2 answers
  • Please could someone help
    5·1 answer
  • Suppose there is a 1.8*F drop
    9·2 answers
  • Determine the intercepts of the line.<br><br>8x−5y=−11<br><br>​
    14·1 answer
  • 4.7×2.65 4.7 times 2.65
    5·1 answer
  • What is The slope of the Line?? DONT UNDERSTAND
    5·1 answer
  • Which equation represents a proportional relationship between x and y values
    15·1 answer
  • PLEASE HELP I WILL MARK BRAINEST JUST HELP PLEASE!!!!!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!