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frez [133]
3 years ago
9

I NEED HELP PLEASE!

Mathematics
1 answer:
Kryger [21]3 years ago
5 0

Answer:

351π ft³

Step-by-step explanation:

Volume of a Cone is: \frac{1}{3} \pi r^2h

Where r is the radius and h is the height.

The cone's radius is 9 while the height is 13.

\frac{1}{3}( \pi* 9^2*13)\\9^2 = 81\\81 * 13 = 1053\\\rightarrow\frac{1}{3} 1053\pi \\1053/3 = 351\\\boxed {V=351\pi}

The volume of the cone in exact form is 351π ft³.

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Factor fully.<br> x2 + 5x + 6
lara31 [8.8K]

Answer:

You can't factor x or any number other than 1 out.

Step-by-step explanation:

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4 years ago
HELP THIS IS TRIGONOMETRY OR GEOMETRY!!!
Dmitry_Shevchenko [17]

Answer: PR=14.5.

Step-by-step explanation:

1. If the area of PQR is 50, then (QR*PQ)/2=50, so QR*PQ=100 (the area of a triangle is the base*height/2).

2, The tangent of an angle is (the opposite side)/(the adjacent side). So, the tangent of angle P=QR/PQ. Angle P is 36 degrees, and the tangent of 36 degrees is 0.726542528. We can substitute this into the equation we found to get 0.726542528=QR/PQ.

3. Using the equations we found in Steps 1 and 2, we can create a system of equations:

\left \{ {{QR*PQ=100} \atop {QR/PQ=0.726542528}} \right.

We can solve this system of equations to get PQ=11.7319 and QR=8.52375.

4. Using Pythagorean theorem, we can say that PR^2=QR^2+PQ^2. If we substitute the values of PQ and QR into the equation, we can come to the conclusion that PR=14.5014410206, which simplifies to PR=14.5.

6 0
3 years ago
Read 2 more answers
Write an equation for the slope-INTERCEPT FORM
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3 years ago
How do you find percentages?
DochEvi [55]
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To calculate percentage decrease, use this method:

First, Work out the difference (decrease) between the two numbers you are comparing.

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Then, divide the decrease by the original number and multiply the answer by 100.

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Also, If your answer is a negative number then it is a percentage increase. 

<span>If you wish to calculate the percentage increase or decrease of several numbers then I recommend using the first formula.  Positive values indicate a percentage increase whereas negative values indicate percentage decrease.</span>

4 0
3 years ago
Pls answer this along with ur method
Lesechka [4]
Y = 2

y/4 + 2/3 = y/3 + 1/2

2/4 = 1/2
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2/4 + 2/3 = 2/3 + 1/2
3 0
4 years ago
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