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liubo4ka [24]
2 years ago
5

10x + 7y = –8 7x + 7y = –14

Mathematics
1 answer:
Georgia [21]2 years ago
4 0

Answer:

(2, - 4 )

Step-by-step explanation:

Given the 2 equations

10x + 7y = - 8 → (1)

7x + 7y = - 14 → (2)

Subtract (2) from (1) term by term to eliminate y

(10x - 7x) + (7y - 7y) = - 8 - (- 14) , that is

3x = 6 ( divide both sides by 3 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (1)

10(2) + 7y = - 8

20 + 7y = - 8 ( subtract 20 from both sides )

7y = - 28 ( divide both sides by 7 )

y = - 4

solution to the system of equations is (2, - 4 )

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Answer:

6:45

Step-by-step explanation:

7 0
2 years ago
If i kick a soccer ball 10 feet and i comes back, how did this happen
Harman [31]
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8 0
3 years ago
1 hundreth is how many times greater than 1 thousandths? Pls helppp
Verdich [7]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
3^x = 27^a+b and a^2-b^2/(a-b)=5 What is x?
Colt1911 [192]
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4 0
3 years ago
!*I NEED HELP AND QUICK*!
rewona [7]
1)96/8=12
2)(95*6+5)/6 : (24+1)/3 = (95*6+5)/6 : 2*25/6 = 575/6 *6/50=575/50
=23/2=11 1/2
11 1/2

3) (11 1/2)*12 area of the one  type of the wall, there are 2 such walls
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(8 1/3)*12 area of the second type of the wall, there are 2 such walls
(8 1/3)*12 *2

Altogether area of the walls:
(11 1/2)*12*2 + (8 1/3)*12 *2=12*2(11 1/2 + 8 1/3)= =24(19+3/6+2/6)=24(19+5/6) = 456 +24*(5/6)= 456+20= 476

Tamara needs total 476  square feet, which is less than 480 square feet, so she has enough paint.



5 0
3 years ago
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