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aleksklad [387]
3 years ago
13

What is the volume of the cylinder below

Mathematics
1 answer:
Alika [10]3 years ago
7 0

Answer:

Option A, 80π

Step-by-step explanation:

4²×5π

= 80π

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Write the phrase as an expression. the difference of 12 and a number x
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Answer:

12-x=y

Step-by-step explanation:

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3 years ago
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What's 43080700 in word form
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Forty three million, eighty thousand seven hundred
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An olympian swam the 200-meter freestyle at a speed of 1.8 meters per second. An olympic runner ran the 200-meter dash in 21.3 s
Maurinko [17]

Answer:

7.6m/s

Step-by-step explanation:

Find the time the Olympian swam

Speed=distance/time ⇒⇒Time=distance/speed

Distance=200m , speed= 1.8m/s   t= 200/1.8 = 111.11 seconds

Find the speed of the Olympic runner

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A model length of 12 cm. represents an actual length of 102 ft. What is the scale for the model?
Rom4ik [11]
12 cm:102 ft
--------  ------
12        12
1 cm:8.5 ft

The scale is 1 cm equals 8.5 ft.
5 0
3 years ago
Find a cubic polynomial with integer coefficients that has $\sqrt[3]{2} + \sqrt[3]{4}$ as a root.
Paul [167]

Find the powers a=\sqrt{2}+\sqrt{3}

$a^{2}=5+2 \sqrt{6}$

$a^{3}=11 \sqrt{2}+9 \sqrt{3}$

The cubic term gives us a clue, we can use a linear combination to eliminate the root 3 term $a^{3}-9 a=2 \sqrt{2}$ Square $\left(a^{3}-9 a\right)^{2}=8$ which gives one solution. Expand we have $a^{6}-18 a^{4}-81 a^{2}=8$ Hence the polynomial $x^{6}-18 x^{4}-81 x^{2}-8$ will have a as a solution.

Note this is not the simplest solution as $x^{6}-18 x^{4}-81 x^{2}-8=\left(x^{2}-8\right)\left(x^{4}-10 x^{2}+1\right)$

so fits with the other answers.

3 0
3 years ago
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