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Harman [31]
3 years ago
11

How to find solution to system of equations using substitution?

Mathematics
1 answer:
iris [78.8K]3 years ago
7 0
Well u need to give me the equation and the substitutions for the variables then I can solve it
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Solve the system of equations by the addition method <br> { 5x-y=-3<br> { 4x+3y=-48
Svetach [21]

Answer:

(-3,-12)

Step-by-step explanation:

Multiply the first equation by three to match the second equations y-term

  • 3(5x-y=-3)
  • 4x+3y=-48

  • 15x-3y=-9
  • 4x+3y=-48

The y-terms cancel out

  • 15x=-9
  • 4x=-48

Add the x-terms with each other and the terms after the equal sign as well

  • 19x=-57

Divide -57 by 19

  • x=-3

Input your x-term (-3) into one of the two first equations and multiply

Either:

  • 5(-3)-y=-3 or
  • 4(-3)+3y=-48

  • -15-y=-3 or
  • -12+3y=-48

Simplify your terms

  • -y=12
  • 3y=-36

Divide

  • y=-12
  • y=-12
4 0
3 years ago
One liter is approximately equal to 0.26 gallons. Find the volume rounded to the nearest hundredth of a gallon of a container th
Leni [432]
107.2×.26= 27.87 gallons
107.2 liters, .26 gallons per liter
3 0
3 years ago
Read 2 more answers
6.6÷2.2+(3.2+4)=<br> Use pemdas
maxonik [38]
3.2+4=7.2
6.6/2.2=3
3+7.2=10.2
10.2
8 0
3 years ago
Graph the system of equations. Identify the type of system as consistent, Inconsistent, or equivalent.
Alisiya [41]

Answer:

12

Step-by-step explanation:

6 0
3 years ago
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6. Given that ABCD is a quadrilateral with A(-2,-2), B(1, 1),
irina1246 [14]

Answer:

it is a parallelogram

Step-by-step explanation:

so first plot out points and then you find the slope for each of the corresponding lines.

First lets find the slope for AB. you must subtract them and make it -2-1/-2-1. it ends up having a slope of 1.

Then find the slope of the corresponding side(CD). this we will subtract -2-1/3-6. this will have a slope of 1 and will be parallel to AB.

Next you find the slopes of the other two sides starting with AC. we will subtract -2-(-2)/-2-3. this will be a vertical line which means it has a slope of 0.

finally the last step is you see if BD has an equal slope to AC. you then subtract 1-1/1-6. this is also a vertical line so the slope is 0 just like AC so they are both parallel.

in conclusion there are two sets of parallel lines so you have a parallelogram

7 0
2 years ago
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