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tamaranim1 [39]
3 years ago
8

Solve the system by substitution6x+2y=26 x=6y+21

Mathematics
1 answer:
Savatey [412]3 years ago
8 0
Substitute x = 6y + 21 into the first equation:-
6(6y+21) + 2y = 26 
36y + 126 + 2y = 26
38y =  -100
y = -2.63
x =   6(-2.63) + 21 = 5.22

answer (-2.63, 5.22)   to nearest hundredth 
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Answer:

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Answer is A

Source: https://www.1728.org/diam.htm

Step-by-step explanation:

5 0
4 years ago
4a - 5 + 2a + 9 = 28
BaLLatris [955]

Answer:a=4

Step-by-step explanation:

Simplifying

4a + -5 + 2a + 9 = 28

Reorder the terms:

-5 + 9 + 4a + 2a = 28

Combine like terms: -5 + 9 = 4

4 + 4a + 2a = 28

Combine like terms: 4a + 2a = 6a

4 + 6a = 28

Solving

4 + 6a = 28

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-4' to each side of the equation.

4 + -4 + 6a = 28 + -4

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6a = 28 + -4

Combine like terms: 28 + -4 = 24

6a = 24

Divide each side by '6'.

a = 4

Simplifying

a = 4

8 0
4 years ago
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Answer:

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Step-by-step explanation:

60 percent of 270 is 162 add that to 270 and you get 432 divide that by 18 because that's what you're paying every month and you get 24 which is the numbe rof months it will take you to pay the bed off.

To cross check we can multiply 18 and 24 and you get 432.

4 0
3 years ago
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MAVERICK [17]

Answer:

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Step-by-step explanation:

You just multiply the two. If there are 24 grams in one cubic meter, then 6 of those will weigh 6 times as much.

5 0
3 years ago
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