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4 years ago

Please help will mark brainliest and 20 points

Mathematics

1 answer:

Arada [10]4 years ago

6 0

Answer:

10 weeks

Step-by-step explanation:

she already has 14

so 5 x 10 = 50

14+50=64

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Round your answer to the nearest tenth if necessary. Use 3.14 for .

harina [27]

Answer:

$\boxed{\rm \: Volume_{(Drum)} = 5024 \: in {}^{3} }$

Step-by-step explanation:

Given :

Diameter of a drum = 20 inches
Deep ( height ) of the drum = 16 inches
π = 3.14

To Find:

The volume of the drum.

Solution:

We all know that drum is cylindrical.So we'll use the formulae of the volume of cylinder,to find its volume.

$\boxed{\rm \: Volume_{(Cylinder)} = \pi{r} {}^{2} h}$

Where,

r = radius
h = height (deep)
π = 3.14

The value of radius ain't given,but the diameter is given.We can use the formulae of radius.

$\rm \: Radius = D/2$

D = diameter

Substitute the value of diameter:

$\rm \: Radius = \cfrac{20}{2} = 10$

Hence,the radius is 10.

So we could now use the formulae of the volume of cylinder:

$\rm \: Volume_{(Cylinder)} = \pi{r} {}^{2} h$

π = 3.14
r =10 in
h = 16 in

<em>[Firstly bring the answer in terms of π then plug π = 3.14 and then simplify.]</em>

$\rm \: Volume_{(Drum)} = \pi(10) {}^{2} (16)$

$\rm \: Volume_{(Drum)} =\pi100(16)$

$\rm \: Volume_{(Drum)} = 1600\pi$

$\rm \: Volume_{(Drum)} = 1600 \times 3.14$

$\boxed{\rm \: Volume_{(Cylinder)} = 5024 \: in {}^{3}}$

<u>Hence, we can conclude that:</u>

The volume of this drum is 5024 in^3.

8 0

2 years ago

The population of current statistics students has ages with mean muμ and standard deviation sigmaσ. samples of statistics studen

bagirrra123 [75]

Because n > 30, the sampling distribution of the mean ages can be approximated by a normal distribution with mean µ and standard deviation σ ÷ √(45) .The central limit theory applies whenever n > 30. Because n > 30, the sampling distribution of the mean ages can be approximated by a normal distribution with mean µ and standard deviation σ ÷ √(n) .

5 0

3 years ago

What did this person do wrong? Honestly really stuck and do not remember geometry!

dmitriy555 [2]

Answer:

See below.

Step-by-step explanation:

Using the right triangle altitude theorem, the correct proportions are:

$\dfrac{AB}{AC} = \dfrac{AC}{AD}$