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Maslowich
3 years ago
7

Substitution 4x-2y=10 y=2x-5

Mathematics
1 answer:
Reil [10]3 years ago
5 0

4x - 2y = 10

y = 2x - 5

Because we have a value for y, we can plug it into the first equation to solve for x.

4x - 2(2x - 5) = 10

Distributive property.

4x - 4x + 10 = 10

Combine like terms.

<h3>10 = 10</h3><h3>The equation is true, and so there are infinite solutions, meaning both lines are on top of each-other. </h3>
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5 x + 3 + 4y - 7+6x - y-3x
fiasKO [112]

Answer:

1) 8x- 4+3y

2) 12x- 28

3) 6 (3x+2)

4) 7x+2

Step-by-step explanation:

1) 5x +3 +4y-7+6x-y-3x

  8x+3+4y-7-y

2) 4x3x-4x7

   12x-4 x 7

3) 18x+12

   6(3x+2)

   

4) 9x+ 1-7x +4+5x- 3

   7x+1+4-3

Im sorry I wanted to answer it as quick as possible sorry if you dont understand.  

7 0
3 years ago
Kevin cuts lawns during the summer months. He charges $10 plus $5 per hour. The algebraic model is C = 5h + 10, where C represen
Dafna1 [17]

Answer:

We have;

Hours (h),                            Total cost C

1,                                           5*1 + 10 =  $15

2,                                          5*2 + 10 = $20

3,                                          5*3 + 10 =  $25

4,                                          5*4 + 10 =  $30

5,                                          5*5 + 10 =  $35

Step-by-step explanation:

The given parameters are;

Kevin's fixed charge for lawn cutting = $10

Kevin's charge for lawn cutting per hour = $5

The total cost, C, for cutting lawn cutting by Kevin is C = 5h + 10

7 0
4 years ago
A birdhouse and the pole that it is on cast a shadow 15 feet long. If a person standing nearby casts a shadow 5 feet long, and t
Viefleur [7K]
Answer:
12
Step-by-step explanation:
15 feet total amount combined by pole and
birdhouse
4 foot tall person makes 5 feet long
shadow
5×3=15
4x3=12 so the birdhouse and pole are 12
feet
THANKS!
6 0
3 years ago
5/3+5/3+5/3 = how to solve
Vsevolod [243]
15/3 = 5
divide 15 by 3
8 0
3 years ago
The bank has accepted Harriet's application for a mortgage to buy a property worth $325,500. She has to make a down payment of 2
8_murik_8 [283]
<span>What is 20% of $325,500?
</span><span>She needs a loan of 80%. So multiply 80% by the purchase price.
</span><span>325500 x 80% $260,400
</span>hope this helps

8 0
3 years ago
Read 2 more answers
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