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expeople1 [14]
3 years ago
9

Jamar is four times as old as Josh. In 20 years he will be twice as old as Josh. How old is Jamar?

Mathematics
1 answer:
Juliette [100K]3 years ago
5 0
Simultaneous equations
Jamar=J
Josh=j
4J=j
20+J=2j
Then
4J=j
-4 (J)=-4(2j-20)
So
0=-7j+80
7j=80
j=80÷7
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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
yanalaym [24]

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

Similarly total operating costs = $2110

Total profit per annum = $11890

However total revenue per every 2 weeks = $1189

To buy the truck, sell his and go on the fishing trip it will cost = 5200-1500+250 =$3950 hence he has to work for about 6.64 or approximately 7 weeks before going on the fishing trip

2) Opportunity cost will factor in the cost of having someone work for him while away

The cost is = $250 + $120/day

Hence in two weeks it will cost him $1450

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

7 0
3 years ago
What is (-8)+11x[-2-(-4)=?
Goryan [66]
<span><span>−8</span>+<span><span>11x[</span><span><span><span>−2</span>−<span>(<span>−4</span>)]</span></span></span></span></span><span>=<span><span>−8</span>+<span>22<span>x
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Hope I helped, and if I did, than feel free to vote brainliest
7 0
3 years ago
5y-intercept = -5Slope =T3'DO
svp [43]

Answer:

T3 = 30

Step-by-step explanation:

9x + 3y - 6z = 18. 6. 3x-5y+10z= 15.

10x + 4y+5z = 20

3 0
2 years ago
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IrinaVladis [17]

Answer: the graph is shifted 6 units down

Step-by-step explanation:

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2 years ago
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Brilliant_brown [7]

Answer:

This relationship can be represented by a linear equation

y=18x+45

Step-by-step explanation:

y=18x+45

Where x is time in hours

6 0
3 years ago
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