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Mariulka [41]
2 years ago
7

Find the value of x and y 2x+7y=4 -4x-3y=14

Mathematics
1 answer:
guapka [62]2 years ago
5 0

Answer:

x=-5 y=2

Step-by-step explanation:

1) multiplying equation 1 by 4 and multiplying equation 2 by 2 .

2)adding them we get value of y.

3) replacing value of y in either of given equation

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Y = -4x + 8<br> Y=3/5x - 6/5
VladimirAG [237]

Answer:

x=2 and y=0

Step-by-step explanation:

Rewrite equations:

y=−4x+8;y=

3

5

x+

−6

5

Step: Solvey=−4x+8for y:

y=−4x+8

Step: Substitute−4x+8foryiny=

3

5

x+

−6

5

:

y=

3

5

x+

−6

5

−4x+8=

3

5

x+

−6

5

−4x+8+

−3

5

x=

3

5

x+

−6

5

+

−3

5

x(Add (-3)/5x to both sides)

−23

5

x+8=

−6

5

−23

5

x+8+−8=

−6

5

+−8(Add -8 to both sides)

−23

5

x=

−46

5

−23

5

x

−23

5

=

−46

5

−23

5

(Divide both sides by (-23)/5)

x=2

Step: Substitute2forxiny=−4x+8:

y=−4x+8

y=(−4)(2)+8

y=0(Simplify both sides of the equation)

5 0
3 years ago
1/5(150x-80y+50-50x-25y+20)
ExtremeBDS [4]
1/5 (150x - 80y + 50 - 50x - 25y + 20) = 20x - 21y + 14
what I did is combined the like terms and multiplied each term within the parenthesis by .2
5 0
3 years ago
Read 2 more answers
7=-5/2 x + b<br>what is the value of b and please explain.​
Talja [164]

Answer:

b = 5/2x + 7

Step-by-step explanation:

b + (-5/2x) = 7

b - 5/2x = 7

b = 5/2x + 7

3 0
3 years ago
A fruit juice company includes 1.858 ounces of pineapple juice in a 6.65-ounce bottle of a mixed fruit
NeTakaya
4.792 ounces

Remember to put the word ounces to get full credit on the answer
7 0
3 years ago
If the coordinate of A is (0,-2) and the coordinate of B is (10,-6), then the midpoint of AB is (______).
balu736 [363]

Answer:

5, -4

Step-by-step explanation:

midpoint = x1 + x2/2 ,y1 + y2/2

= 0 + 10 /2 , -2 + -6/2

= 10/2 , -8/2

midpoint = 5, -4

4 0
3 years ago
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