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
Alex787 [66]
3 years ago
13

X-5y=16 , 4x-2y=-8 solve using elimination method

Mathematics
1 answer:
serious [3.7K]3 years ago
8 0

Answer:

x = -4

y = -4

Step-by-step explanation:

L1     x - 5y = 16

L2  4x - 2y = -8

4*L1 - L2

4x - 20y = 64

-4x + 2y  =    8

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

      -18y = 72

          y = 72 / -18

          y = -4

x - 5y = 16

x = 16 + 5y

x = 16 + 5(-4)

x = 16 - 20

x = -4

You might be interested in
Desmond brought a 70 feet roll of copper for 14.70 what is the price per foot
alekssr [168]
70 / 14.7 = 4.8
the correct answer is 4.8
Hope I helped. =)
4 0
3 years ago
Read 2 more answers
A recipe calls for 12 oz of flour for every 11 oz of milk. Let x be the amount of milk used. Let y be the amount of flour used.
nekit [7.7K]
17 and 1/2 oz of flour
4 0
3 years ago
What is the area of a circle with radius 13yd
Vadim26 [7]
The formula to find the area of a circle is 2 x r^2
so 2 x 13^2 = 338
8 0
3 years ago
What is the constant of propotionality in the equation 3y=2x?
liq [111]

Answer:

<em>k=2/3</em>

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form  <em>y/x = k or y = kx</em>

In this problem we have <em>3y = 2x</em>

Isolate the variable y

Divide by 3 both sides

<em>y = 2/3x</em>

Remember that

In a proportional relationship the constant of proportionality k is equal to the slope m of the line

The slope of the line m is

<em>m = 2/3</em>

therefore

The constant of proportionality k is

<em>k = 2/3</em>

<em>I hope this helped have a wonderful day/night ! <3 </em><em>(depends what time it is)</em>

4 0
4 years ago
Solve for x -4=x-8\9
zvonat [6]
The answer I believe is X=-28/9
5 0
2 years ago
Other questions:
  • Please answer one and two correctly it’s for a grade and I don’t understand
    14·2 answers
  • Can a triangle have sides with the given lengths? 2ft, 7ft, 12ft
    14·2 answers
  • How many degrees will the hour hand of a clock move if it is turned clockwise from 4 pm to 8 pm?​
    6·1 answer
  • PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·2 answers
  • Suppose a spherical balloon grows in such a way that after t seconds, its volume is V = 4 sqrt(t) cm3. What is the volume of the
    14·1 answer
  • 3x - y = 4<br> x + 2y = 6
    13·2 answers
  • I Need help fast I’d really appreciate it!
    5·1 answer
  • A student must study for 20 to 30 hours a week to maintain their grade point average. If the
    10·1 answer
  • Got a good one here. For math experts only !
    7·1 answer
  • A rectangle has a width of w and a length 4 more than twice the width. The perimeter is 68.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!