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
AveGali [126]
3 years ago
8

2x+y=8 y+3z=5 z+2w=1 5w+3x=9 Find the solution to each variable

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

Answer:

  w = 0, x = 3, y = 2, z = 1

Step-by-step explanation:

You can use each equation to write an expression that will substitute into the next equation.

  y = 8 -2x . . . . from the first equation

  8 -2x + 3z = 5 . . . . . substituted into the second equation

  z = (-3 +2x)/3 . . . . . solved for z

  (-1 +2/3x) +2w = 1 . . . . . substituted into the third equation

  w = (2 -2/3x)/2 . . . . . solved for w

  5(1 -1/3x) +3x = 9 . . . . . substituted into the last equation

  4/3x = 4 . . . . . simplified, 5 subtracted

  x = 3 . . . . . . . . multiply by 3/4

  w = 0 . . . . . . . .value of x substituted into equation for w

  z = 1 . . . . . . . . value of x substituted into equation for z

  y = 2 . . . . . . . .value of x substituted into equation for y

The solution is (w, x, y, z) = (0, 3, 2, 1).

You might be interested in
Need some help, thanks :)
Ira Lisetskai [31]

7 is equal to x, so yeah


7 0
3 years ago
Random Questions To Answer For Points.
Fantom [35]

Answer:

The rate is the distance divided by the time.

  60 feet in 10 seconds   =   60 ft / 10 sec   =  6 ft / sec

  42 feet in 6 seconds   =   42 ft / 6 sec   =   7 ft / sec    <--- We have a winner!

Step-by-step explanation:

6 0
3 years ago
Y=x+4 what is the slope and y-int
IceJOKER [234]

Answer:

m=1 b=4

Step-by-step explanation:

slope: y=mx+b   m=1

interception: b=4

6 0
3 years ago
Find the amount erica owes at the end of 6 years if $60000 is loaned to her at a rate of 4% compounded monthly
RSB [31]

Answer: $76,244.51

Step-by-step explanation:

You need to use the compound interest formula here.

First of all however, you need to convert the terms to monthly figures because the interest is compounded monthly.

4% in months = 4 / 12 = 4/12%

6 years = 6 * 12 = 72 months

Now use the compound interest formula:

= Amount * (1 + rate) ^ number of years

= 60,000 * ( 1 + 4/12%) ⁷²

= $76,244.51

4 0
3 years ago
Pamela drove her car 99 kilometers and used 9 liters of fuel. She wants to know how many kilometers (k) she can drive with 12 li
masya89 [10]

Answer:

132 kilometers

Step-by-step explanation:

Given: Pamela drove her car 99 kilometers and used 9 liters of fuel.

To find: Number of kilometers Pamela drove in 12 liters of fuel.

Solution:

It is given that Pamela drove her car 99 kilometers and used 9 liters of fuel. Also the relationship between kilometers and fuel is proportional.

So, let us assume that she can travel x kilometers in 12 liters of fuel.

By proportionality we have,

99:9 :: x:12

\frac{99}{9} =\frac{x}{12}

11=\frac{x}{12}

x=12\times11

x=132

Hence, she can travel 132 kilometers in 12 liters of petrol.

7 0
3 years ago
Read 2 more answers
Other questions:
  • The box part of the box plot contains all the values between which numbers? A box-and-whisker plot. The number line goes from 25
    14·1 answer
  • I need help on this question
    15·1 answer
  • Help asap will mark brainliest
    12·2 answers
  • Help me out here pleaseeeeeee
    8·2 answers
  • If there are 7 girls and three boys in the class, what percent of the class is boys ?​
    5·1 answer
  • Is (x+1)/x^2 greater or less or equal to 1/x
    12·1 answer
  • HELP ASAP PLEASE FOR A TEST!!!​
    14·1 answer
  • Someone please help me answer this!!
    14·1 answer
  • Write each relation in standard form and then find the y-intercept for each relation:
    11·1 answer
  • What is the answer to the problem: 1.234x139.893<br> and 674.983x278.475
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!