3 years ago

A collector bought a rare coin for $30. The coin is now valued at $37.50. What is the percent increase in value?

Mathematics

1 answer:

AlladinOne [14]3 years ago

5 0

Answer:

Step-by-step explanation:

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bearhunter [10]

Answer: 14x + 42

7(2x+4)+14

14x + 28 + 14

Step-by-step explanation:

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3 years ago

-2 (3a – 2) = 1/3(7 – 3a)

ahrayia [7]

Answer:

i have no idea. But i will answer because i'm still learning.

Step-by-step explanation:

-2 (3a – 2) = 1/3(7 – 3a)

is whats the question

ok its i'm guessing -2 (3a – 2) = 1/3(7 – 3a)

-2.15384615385

Hope this helps ;)

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3 years ago

Can someone help me with this?

aivan3 [116]

Step-by-step explanation:

The formula for the volume of a sphere is V = 4/3 πr³.

Given

Volume (v) = 57ft³

$v = \frac{4}{3} \pi {r}^{3}$

$57 = \frac{4}{3} \times 3.14 \times {r}^{3}$

$57 = \frac{12.56}{3} \times {r}^{3}$

$57 = 4.19 \times {r}^{3}$

${r}^{3} = \frac{57}{4.19}$

${r}^{3} = 13.6$

$r = \sqrt[3]{13.6}$

Therefore r = 2.4 ft

I gave my answers by rounding off. so if you don't round off then it's answer is 2.3 ft

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3 years ago

What is the difference between the mean and the median of the data set?<br> (22, 8, 10, 18, 12, 20)

IgorC [24]

Let D = difference between mean and median of data.

Mean = (22 + 8 + 10 + 18 + 12 + 20)/6

Mean = 90/6

Mean = 15

Let m = median

m = 8, 10, 12, 18, 20, 22

m = (12 + 18)/2

m = 30/2

m = 15

D = M - m

D = 15n- 15

D = 0

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3 years ago

a localiddle school has 47 computers and 174 students. what is the number of students per computer at the school ? express your

stellarik [79]

174/47 = 3.7 = 3 7/10

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3 years ago

A collector bought a rare coin for $30. The coin is now valued at $37.50. What is the percent increase in value?​

A collector bought a rare coin for $30. The coin is now valued at $37.50. What is the percent increase in value?