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Hunter-Best [27]
2 years ago
7

David earns 20% commission as a salesperson. He sold a hammock that cost $100. ​How much commission did David earn?

Mathematics
1 answer:
omeli [17]2 years ago
6 0
He earned $20 because 20% of $100 is $20
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Use the substitution method to solve.
lord [1]

Answer:

x = 7, y = 6

Step-by-step explanation:

solve for y for the first equation

2x + y = 20

-2x         -2x , eliminate 2x

y = 20-2x

now that we have found y, substitute the y in for the second equation

-5y = -6x + 12

-5(20-2x) = -6x + 12, we just changed y into 20-2x. remember that we are multiplying all of 20 - 2x by -5

-100+10x = -6x + 12, we multiplied everything from the parathesis  by -5

+100                 + 100, eliminate -100

10x = -6x + 112

+6x    +6x , eliminate 6x

16x = 112 , solve for x

x = 7

then y = 20 - 2x = 20 - 2*7 = 6

check:

2 * 7 + 6 = 20

20 = 20

-5 * 6 = -6 * 7 + 12

-30 = -42 + 12

-30 = -30

4 0
3 years ago
.<br> Choose the description of the graph of the equation x = -8.
pickupchik [31]
The description should be a vertical line on the negative side on the grid and the vertical line should be placed on the negative 8 on the x axis.

3 0
3 years ago
Read 2 more answers
I only need help with #10 :) offering 10 pts
Semenov [28]

Answer:

The length of one side of the square is 3.

Step-by-step explanation:

The perimeter of any given shape is all of the sides added together. So, the perimeter of the triangle is 5x + 4x + 3x. Added together, 12x.

The perimeter of the square is (x + 2)*4. Distributed, it's 4x + 8. Since we know they're equal, set it up like this:

12x = 4x + 8

You then find that x = 1. Plug that into one side of the square, x + 2, to get 3.

8 0
3 years ago
Ano pints na this JUST FOLLOW ME FOR MORE​
Reptile [31]

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6 0
2 years ago
What is 5/6 minus 3/8??????
zvonat [6]
So they both go into 24 so 20/24 - 24/24 They answer is 4/24 You can ruduce that to 2/12 or 1/6
4 0
3 years ago
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