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V125BC [204]
3 years ago
9

Kim and ken are trying to earn at least $400 to buy a mountain bike. Kim earns $7 per hour as a youth counselor at camp. Ken ear

ns $5 per hour mowing lawns. Let x = Kim's hours and y = Ken's hours. If ken works 40 hours, what is the least number of hours that ken will need to work to meet their goal?
Mathematics
1 answer:
professor190 [17]3 years ago
7 0

Answer: 29 Hours of Work

Step-by-step explanation: Let's start by working backwards.. We know that Ken makes 5 dollars an hour, and he worked 40 hours. 5 * 40 = 200, and 400-200 = 200. This means that Kim has to work 200/7 hours, or (approximately) 29 hours of work.

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Step-by-step explanation: They both equal the original equation.

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4 years ago
The next model of a sport car will call 6.7% less than the current model the current model cost 37000 dollars how much will the
Stolb23 [73]

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1369

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3 years ago
Factor the expression completely.<br><br> xy^4-y^2
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7 0
3 years ago
Read 2 more answers
As a ship approaches the dock, it forms a 70 angle between the dock and the lighthouse. At the lighthouse, an 80 angle is formed
Trava [24]

Answer:

The distance from the ship to the dock is approximately 5.24 miles

Step-by-step explanation:

From the parameters given in the question, we have;

The angle formed between the dock and the lighthouse = 70°

The angle formed between the dock and the lighthouse at the ship = 80°

The distance between dock and the lighthouse = 5 miles (From a similar question online)

By sine rule, we have;

\dfrac{a}{sin(A)} = \dfrac{b}{sin(B)} = \dfrac{c}{sin(C)}

Therefore, we have;

\dfrac{5}{sin(70^{\circ})} = \dfrac{The \ distance \ from \ the \ ship \ to \ the \ dock}{sin(80^{\circ})}

\therefore The \ distance \ from \ the \ ship \ to \ the \ dock = sin(80^{\circ}) \times \dfrac{5}{sin(70^{\circ})}

sin(80^{\circ}) \times \dfrac{5}{sin(70^{\circ})} \approx 5.24 \ mi

Therefore;

The distance from the ship to the dock ≈ 5.24 miles

7 0
3 years ago
A lock has 3 digits and can have any number from 0-9 how many combinations are there
tatiyna

Ten choices for the first digit, 10 for the second, 10 for the third,

10 × 10 × 10 = 1000 combinations

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3 years ago
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