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Elis [28]
3 years ago
5

gabriella rents bikes for $13 plus $7 per hour. Eduardo paid $27 to rent a bike for how many hours did he rent the bike?

Mathematics
2 answers:
e-lub [12.9K]3 years ago
5 0

He has it for 2 hours

Harrizon [31]3 years ago
5 0

The total cost was $27. The total cost is made up of a fixed amount, $13, and an hourly amount. Subtract the fixed amount from the total cost to find the hourly amount.

$27 - $13 = $14

$27 = total cost

$13 = fixed cost

$14 = hourly cost

Since the hourly rate is $7/hour,

$14/($7/hr) = 2 hours

He rented for 2 hours.

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Sonny substituted 5 for x in the proportion 16/x=48/15 and cross multiplied to get 240=240. Why is this?
Mashutka [201]
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Solve the equation for x:<br> -3(x + 4) + 5x = 24
mr_godi [17]
<h2>Answer:</h2>

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Use Hooke's Law to determine the work done by the variable force in the spring problem. A force of 450 newtons stretches a sprin
vlada-n [284]

Answer:

The work done is 202.50Nm

Step-by-step explanation:

Given

F =450N

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x_2 = 60cm

Required

The work done

First, we calculate the spring constant (k)

F = kx_1

450N = k *30cm

k = \frac{450N}{30cm}

k =15N/cm

So:

F = kx_1

F(x) = 15x

The work done using Hooke's law is:

W =\int\limits^a_b {F(x)} \, dx

This gives:

W =\int\limits^{60}_{30} {15x} \, dx

Rewrite as:

W =15\int\limits^{60}_{30} {x} \, dx

Integrate

W =15 \frac{x^2}{2}|\limits^{60}_{30}

This gives:

W =15 *\frac{60^2 - 30^2}{2}

W =15 *\frac{2700}{2}

W =15 *1350

W =20250N-cm

Convert to Nm

W =\frac{20250Nm}{100}

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7 0
3 years ago
Mary wrote a book of 1536 pages. She numbered all pages by hand. How many times did she write the digit 6?
abruzzese [7]

<em>Hi there!</em>

<em>~</em>

<em>If my logic doesn't fail me here, we have a total of 290 + 145 + 4 = 439 total 6s.</em>

<em>Hope this helped you!</em>

5 0
3 years ago
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