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nadezda [96]
3 years ago
14

Simplify (3x + 5) + (2x - 9) - (4x + 3). x - 7 -x - 7 -9x - 1 9x - 1

Mathematics
1 answer:
Lyrx [107]3 years ago
4 0
Hi Grant.

(3x + 5) + (2x - 9) is what we'll start with. Considering we cannot combine variables with numbers, we can only combine like-terms.

3x + 2x; 5 - 9; we result with: 5x - 4

Now, we are left with (5x - 4) - (4x + 3)
Remember to distribute the negative sign to everything to the right.

(5x - 4) - 4x - 3. We are now able to simplify and solve for our answer.

5x - 4x; -4 - 3; we result with x - 7.

Your answer is A.) x - 7.

I hope this helps!
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Colton earns $35 per lawn he mows. In kne day he mows four lawns and he works five days a week for 20 weeks a year. His expenses
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Answer:

1) Consider that he makes $1189 every two weeks engaged with work

2) An estimate of the opportunity cost of going on the fishing trip is $1450 in two weeks

3). If he decides to buy the truck, he has to work for about 7 weeks before going on the fishing trip

Step-by-step explanation:

From the given data

Total revenue from lawn mowing per year = 35 × 4× 5×20 = $1400

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Total profit per annum = $11890

However total revenue per every 2 weeks = $1189

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The cost is = $250 + $120/day

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3) He has to work for about 7 weeks to be able to afford the truck

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Write a system of equations to describe the situation below, solve using elimination, and fill in
Andrej [43]

Answer:  Child is $1 and Adult is $3, per person.

Step-by-step explanation:

We have two unknowns, so we need at least two equations.  Let C and A stand for the price of a ticket for a child and an adult, respectively.

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Tuesday:  24C + 26A = $102

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C  = ($102 - 26A)/24

Now use this expression for C in the first equation

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Use this value in either equation to find the price of a child's admission:

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Check to see if these prices satisfy both equations:

Monday:   16C + 42A = $142

Tuesday:  24C + 26A = $102

---

Monday:   16*(1) + 42*(3)  = $142   ?   YES

Tuesday:  24*(1) + 26*(3) = $102   ?    YES

<u>Child is $1 and Adult is $3, per person.</u>

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