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Scrat [10]
2 years ago
14

Answer the Question the volume based Question. I will make uh brainliest + 50 points​

Mathematics
1 answer:
Dimas [21]2 years ago
4 0
<h3><u>Part A</u></h3>

To show the total capacity of container B is 132 cm³

volume = unit rate × time taken

volume = 6 cm³ × 22

volume = 132 cm³ ∴ Hence proved.

<h3 /><h3><u>Find radius</u></h3>

\sf volume \ of \ cone = \dfrac{1}{3} \pi r^2 h

===================

\rightarrow \sf \dfrac{1}{3} * \dfrac{22}{7}  * r^2 * 14 = 132

<em>simplify</em>

\rightarrow \sf  \dfrac{44}{3}  * r^2= 132

<em>change sides</em>

\rightarrow \sf r^2= \dfrac{132(3)}{44} = 9

<em>square root both sides</em>

\rightarrow \sf r = 3

∴ Hence the radius of cone (Shape B is 3 cm)

<h3><u>To show the time taken</u></h3>

volume = unit rate × time taken

\sf volume  \ of \ hemi -sphere = \dfrac{2}{3} \pi r^3

=========================

\sf \rightarrow  \dfrac{2}{3} \pi r^3 = 6 * time  \ taken

<em>Insert values</em>

\sf \rightarrow  \dfrac{2}{3} *\dfrac{22}{7}  \  r^3 = 6 * time  \ taken

<em>exchange sides</em>

\sf \rightarrow   time  \ taken =  \dfrac{2}{3} *\dfrac{22}{7}  \  r^3 *\dfrac{1}{6}

<em>simplify following</em>

\sf \rightarrow   time  \ taken =  \dfrac{22}{63}r^3

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Please help this is almost due soon!
PolarNik [594]

Answer:

6\pi

Step-by-step explanation:

The area of the circumference of a circle is:

C=2\pi r

We know that r is 8, so we can plug that into the formula.

However, there's a problem.  We only want 3pi/4 of the circumference, not the entire circle's circumference.  Therefore, we have to divide by part/whole.  In this case, the part is 3pi/4, and the whole is 2pi (the entire circle is 2pi radians).

C = (\frac{3\pi/4}{2\pi})*(2\pi *8)\\C = (\frac{3}{8})(16\pi)\\C = \frac{48\pi }{8} \\C = 6\pi

6 0
3 years ago
Which equation has the correct sign on the product?
irakobra [83]
C. 25(-5) = 125 this is the answer
6 0
3 years ago
Suppose an investment of $5,000 doubles every 12 years. How much is the investment worth after 36 years? After 48 years?
nadezda [96]
This can be done without exponential equations.

It doubles every 12 years so it has doubled in price
5,000 * 2 = 10,000

After 36 years the value has increased 8 times
5,000 * 8 = 40,000

After 48 years the value has increased 16 times
5,000 * 16 = 80,000


8 0
3 years ago
The probability of drawing a black marble from a bag is 1/2, and the probability of drawing a white marble from the same bag is
s344n2d4d5 [400]
<span>W = event where white marble is drawn 
B = event where black marble is drawn 

The two events W and B are independent. This is because the marble taken out on the first draw is put back into the bag. Since W and B are independent, we can use this rule 

P(W and B) = P(w)*P(B) 


Use the rule to get 

P(W and B) = P(W)*P(B)
P(W and B) = (1/2)*(1/4)
P(W and B) = (1*1)/(2*4)

P(W and B) = 1/8 

1/8 is equivalent to 0.125. Use long division or a calculator 

0.125 = 12.5% </span>
6 0
3 years ago
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ASAP NEED HELP THX LOOK AT PICTURE !!!
Sphinxa [80]
The answer would be c
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2 years ago
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