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Westkost [7]
3 years ago
9

Minerva buys used bicycles, repairs them, and sells them for a profit. She bought a bicycle for $10, repaired it, and sold it fo

r $50. What was the percent increase in the price of the bicycle.
A. 400%
B. 80%
C. 40%
D. 4%

Mathematics
1 answer:
STatiana [176]3 years ago
3 0

it is an increase of 400%

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A weight of 15 ounces stretches a spring 10 inches. A weight of 24 ounces stretches the same spring 16 inches. How many inches d
Tcecarenko [31]
F = k x
15 = k *10
k = 1.5

check:
24 = 1.5 x
x = 16 sureenough

so 1.5 oz/inch
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4 0
3 years ago
There are 25 students in the class. Is it possible that 6 of them have 9 friends each, 8 of them have 8 friends each, and 11 of
KiRa [710]

Answer:

It is not possible

Step-by-step explanation:

First 6 people have 9 friends and since 6 people can have totally the same friends which could all be each other, we would have 5 friends(from same 6 people) + 4 friends(not from the 6). Therefore we would have total 9 people/students

In second group of 8 people, their friends could entirely be the same be the same as the first group's friends or they could all be each other's friend hence just an additional 8 students to the population

In the third group of 11 people/students, same thing could apply as above but total number of students would always surpass 25 with the additional population. Example 9+8+11= 28

Therefore it is not possible that 25 students would each have those number of friends.

5 0
3 years ago
A jet travels 550 miles in 5 hours.At this rate, how far could the jet fly in 14 hours? What is the rate of speed of the jet?
zalisa [80]

Answer:

The jet travels 1,540 miles in 14 hours going at about 110 mph

5 0
3 years ago
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Can you pls help me with this ​
atroni [7]

Answer:

The answer is 3.964.93.

3 0
3 years ago
Can you please help and explain this math question. Thank you so much!​
kolbaska11 [484]

Answer:

A≈3.14cm²

should be the answer, I am not to familiar with solving equations with approximations.

Step-by-step explanation:

formula:

A=\pi r^2

d=2r

A = \frac{1}{4} \pi d^{2} = \frac{1}{4} * \pi * 2^{2} ≈ 3.14159cm²

6 0
3 years ago
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