2 years ago

Solve this system of lineal equations.separate the x- and y- values with a comma 2x=68-12y and 8x=-28+12y

Mathematics

1 answer:

Levart [38]2 years ago

7 0

Answer:

Step-by-step explanation:

rewrite each equation

1) 2x+12y=68

2)8x-12y=-28

because the y values are the same number but opposite signs they will cancel out nicely.

10x=40

x=4

now lets plug x into any of the equations.

2(4)+12y=68

12y=60

y=5

(4,5)

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If R is the midpoint of PS with PR = 7x + 23 and RS= 13x-19 then find PS

Rainbow [258]

If R is the midpoint of PS, then PR = RS -- (1)

Also, PR + RS = PS -- (2)

__________________

PR + RS = PS

7x + 23 + 13x - 19 = PS

__________________

Now, PR = PS

7x + 23 = 13x - 19

7x - 13x = -19 - 23

-6x = -42

x = -42/-6

x = 7

__________________

PS = 7x + 23 + 13x - 19

PS = 7(7) + 23 + 13(7) - 19

PS = 49 + 23 + 91 - 19

PS = 144 

Hope it helps!

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Butoxors [25]

The answer is A =80 because when u add 46+32 =78 and 78 round to the nearest ten is 80

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Find the lateral area and total area of a regular pyramid with a square base. The bae is 10m and the slant edge or height is 13m

kogti [31]

the lateral area and total area of regular pyramid with a square base is 130

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3 years ago

Jackie bought 20 lb. of dog food. The dog food is packaged in 2, 4, and 8 lb. bags. How many bags of each size would Jackie have

Len [333]

Answer: 10 bags that weigh 2 lb.

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Step-by-step explanation:

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2 years ago

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andre [41]

Answer:

x= 20

Step-by-step explanation:

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2 years ago