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2 years ago

Dr.cooper just started an experiment. He will collect data for 8 days. How many hours is this

Mathematics

2 answers:

nekit [7.7K]2 years ago

6 0

Answer:

192 hours

Step-by-step explanation:

24 hours in a day times 8 days equals 192 hours.

valentinak56 [21]2 years ago

5 0

Answer:

8 hours

Step-by-step explanation:

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The volume of a cone is 1540cm³. If its radius is 7cm, calculate the height of the cone. (Take pi = 22/7)

Ann [662]

Answer:

$h=30$

Step-by-step explanation:

Volume of a cone=1540 $cm^{3}$ , Radius=7cm.

The height of a cone=h

When we need to find the height of a cone, we can use the formula of the volume of a cone, which is $\frac{1}{3} \pi r^{2} h$ to find the height of a cone.

$1540cm^{3} =\frac{1}{3}\pi r^{2} h$

Put the pi value=22/7 and the value of radius which is 7 cm into the formula.

$1540cm^{3}=\frac{1}{3}*\frac{22}{7} 7^{2}h$

$1540cm^{3} =\frac{154}{3}h$

Move $\frac{154}{3}$ to another side. 1540 divided by $\frac{154}{3}$ to calculate what is the value of h, h is the height of a cone. Like this.

$\frac{1540cm^{3} }{\frac{154}{3} } =h$

$30=h$

Rearrange the h.

$h=30$

I hope you will understand my solution and explanation. If you still cannot get the point, you can ask me anytime! Thank you!

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schepotkina [342]

Answer:

y=-3

Step-by-step explanation:

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grigory [225]

$9x^{2} + 4y^{2} =144$
$x^{2} + y^{2}=24$

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by the difference
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so x= $\sqrt{\frac{48}{5}}$ or x=- $\sqrt{\frac{48}{5}}$
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then y= $\sqrt{\frac{72}{5}}$ or - $\sqrt{\frac{48}{5}}$

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3 years ago

3 1/2 + 4 3/4, what is the total amount?

tatiyna

8 1/4

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