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ValentinkaMS [17]
4 years ago
6

I WILL MARK THE BRAINLIEST!!! One math question. please explain as well

Mathematics
1 answer:
8090 [49]4 years ago
5 0
Surface area of a sphere=4pi(r^2)
Volume of a sphere=(4/3)pi(r^3)
You need to find the r value to calculate surface area, so I'll solve for that first.
(4/3)pi(r^3)=2254pi
(4/3)(r^3)=2254
r^3=1690.5
r=(1690.5)^(1/3), around 11.9126m
Substitute this in to find surface area
A=4pi(r^2)=4pi(11.9126)^2
=1783.2818 m^2
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7. By selling a bicycle for * 2,850, a shopkeeper gains 14%. If the profit is reduced to 8%, then the selling price
sweet [91]
<h2>Correct option :</h2><h3>= \color{plum}\bold{(b) \: 2,700}</h3><h2>Steps to derive answer :</h2>

Selling price of a bicycle = 2850

Profit percentage = 14%

We know that :

\color{plum}\tt{Cost \:  \:  price =  \frac{Selling \:  \:  price  \:   \times \:  100}{100  \: \:  +  \:  \: profit \: \%} }

Then, the cost price of this bicycle :

= \tt \frac{2850  \times 100}{100 + 14}

= \tt \frac{285000}{114}

=\color{plum} \tt2500

Thus, the cost price of this bicycle = 2500

In another scenario :

Profit percentage = 8%

Cost price of the bicycle = 2500

Then, Selling price will be equal to :

Let x be the selling price of the bicycle.

= \tt2500 =  \frac{\: x \:  \times 100}{100 + 8}

= \tt2500 =  \frac{100x}{108}

=\tt 100x = 2500 \times 108

= \tt100x = 270000

=\tt  x =  \frac{270000}{100}

=\color{plum}\tt x = 2700

Therefore, the selling price with a profit of 8% will be = 2700

6 0
3 years ago
Please help me, choose the right one
Semmy [17]
The answer would be C. $18

Let me know if you have questions

Hope this helps

Have a great day/night
5 0
3 years ago
Read 2 more answers
A cube has a volume of 216 cubic inches. What is the width of the cube?
Anarel [89]

Answer:

6

Step-by-step explanation:

Find the cube root of 216

7 0
2 years ago
Help me pleaseeeeeeeee​
Ira Lisetskai [31]
The answer is 63 just multiply
7 0
3 years ago
Find the inverse function of f(x)=15x-1
Masja [62]

Answer:

f'(x) = (x + 1)/15

Step-by-step explanation:

f(x) = 15x -1,

Think of the term "f(x)" as a single variable, then solve for the term "x", manipulate the equation like how one would manipulate a literal equation, by inverse operations.

f(x) = 15x - 1

+1            +1

f(x) + 1 = 15x

/15         /15

(f(x) + 1)/15 = x

This means that (denote in the way one would denote an inverse of a function);

f'(x) = (x + 1)/15

6 0
3 years ago
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