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Soloha48 [4]
3 years ago
8

A sphere with a mass of 12 g has a radius measuring 2 cm. What is its density?

Mathematics
2 answers:
wariber [46]3 years ago
7 0
I believe it’s 6 g/cm3. I hope this helps!
quester [9]3 years ago
3 0

Answer:

A.0.36 g/cm^3

Step-by-step explanation:

We are given that

Mass of sphere =12 g

Radius of sphere=2 cm

We have to find the volume of sphere

We know that formula of sphere

Volume of sphere=\frac{4}{3}\pi r^3

Using this formula and substitute the values in the formula

Volume of sphere =\frac{4}{3}\pi (2)^3=\frac{32}{3}\pi cm^3

We know that

Density =\frac{Mass}{volume}

Density =\frac{12}{\frac{32}{3}\pi}

Density=\frac{9}{8\times \frac{22}{7}}

Using\pi=\frac{22}{7}

Density=0.357 g/cm^3

Density=0.36 g/cm^3

Therefore, option A is true.

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360 words in 1/12 hour. Second try 360 words in 1/15 hour. Was he faster or slower second attempt
xxTIMURxx [149]

Answer:

Second Attempt is faster.

Step-by-step explanation:

He reads 360 words in \frac{1}{12} hour in the first attempt and in the second attempt he reads the same number of words in \frac{1}{15} hour.

Since, $ \frac{1}{15} < \frac{1}{12} $ he takes less time in the second time. Less time means the work is done faster.

Therefore, second attempt is faster.

8 0
4 years ago
(x^3 + 5)(2x – 1)<br>(x^2 – 4)(x^2 + 4)​
earnstyle [38]

Answer:

x^{3} +x^{2} +1

Step-by-step explanation:

5 0
3 years ago
Suppose g (x) is increasing and concave up everywhere and g(A)=7, gprime(A)=13, h=.01
rewona [7]
First we need a point (x,y) : (A, 7) 
<span>Now slope (from f'(A)) = 15 </span>
<span>Next, the equation (using point slope formula) </span>

<span>y - 7 = 15 (x -A) </span>
<span>y = 15 (x - A) + 7 </span>

<span>Now in the x spot we put 'A-.01' </span>
<span>y = 15 ( A - .01 - A) +7= 15(-.01) +7 = -.15+ 7 = 6.85 
hope this helps</span>
8 0
3 years ago
Can someone help me?
bixtya [17]

Answer:

y = 2.1x +5, 21 miles

Step-by-step explanation:

We will denote miles as "x"

Since she tipped the driver $5, that is a flat rate and that will be our y-intercept. Since it costs $2.10 per mile, we need to multiply that number by the number of miles

So our equation will be y = 2.1x +5

In order to figure out how many miles Ann lives from the airport, we need to substitute y for her grand total that she was charged

This gives us 49.10 = 2.10x + 5

First we need to subtract 5 from each side to get 44.10 = 2.10x

We then need to divide both sides by 2.10 to get 21 = x

Ann drove 21 miles

3 0
3 years ago
Read 2 more answers
Please help me find
erica [24]

Answer:

150 feet

Step-by-step explanation:

the ratio of her shadow to her height

2/5=60/150

60/150=2/5

i hope it is right

3 0
3 years ago
Read 2 more answers
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