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Aleks [24]
3 years ago
9

A sphere has a radius of 3 centimeters what is the volume of the sphere ????

Mathematics
2 answers:
german3 years ago
8 0

The answer is provided in the image attached.

insens350 [35]3 years ago
3 0

Answer:

A  36\pi cm^{3}

Step-by-step explanation:

The formula for the volume of a sphere is \frac{4}{3}\pi r^{3}. Because we are given the radius, 3 (centimeters), of the sphere, all we would need to do is plug 3 in for r, and solve.

\frac{4}{3}\pi (3)^{3}

Using the order of operations (Parentheses, Exponents), we can solve for (3)^{3}, which is 27 (think 3*3*3).

Then, we simply Multiply (\frac{4}{3})(\pi)(27), to get 36\pi.

With our unit, centimeters cubed (cm^{3}), our sphere's volume is 36\pi cm^{3}.

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How do I solve these trigonometric equations!!?
iogann1982 [59]

Answer:

Solution are

i) x = 0, \pi, \frac{3\pi}{2} , 2\pi

Step-by-step explanation:

1) (sinx)(cosx) =0

sin2x/2 =0

2x =0, 2pi, 3pi, 4pi

Hence x = 0, \pi, \frac{3\pi}{2} , 2\pi

---------------------------

2) cos2x + 2 cos x + 1 = 0\\2cos^2 x +2cosx +1 =0\\(cosx+1)^2 =0\\cosx =-1\\x=\pi

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4 0
3 years ago
2. Think of the top and middle shelves as two lines cut by a transversal. What type of angles are
nadya68 [22]

Answer:

Angles 1 and 5 are corresponding angles.

Step-by-step explanation:

These are the different types of angles formed by a transversal:

1. Corresponding angles are angles that lie on the <em>same side</em> of the transversal line. Angles 1, 3, 5, 6, 9, and 11 are corresponding angles because they are all on the left side of the transversal (the line that cuts through the other lines). Angles 2, 4, 6, 8, 10, and 12 are corresponding angles because they are all on the right side of the transversal.

2. Alternate interior angles are angles that are nonadjacent angles that lie on opposite sides of the transversal and in between the horizontal lines. Here the alternate interior angles are 3 and 6, 4 and 5, 7 and 10, and 8 and 9.

3. Alternate exterior angles are those that are nonadjacent and lie on the outside of the horizontal lines. In this diagram, angles 1 and 12 and angles 2 and 11 are alternate exterior.

4. Same-side interior angles are angles that lie on the same side of the transversal and in between the horizontal lines. The same-side interior angles in this diagram are angles 3 and 5, 7 and 9, 4 and 6, and 8 and 10.

5 0
3 years ago
Acar can travel 25 miles per gallon. Approximately how many gallons of fuel will the car need to travel 30
FrozenT [24]

Answer:

The gallons of fuel car need to travel 30 km is <u>0.75</u> approximately .

Step-by-step explanation:

Given:

The car can travel 25 miles per gallon. (1 mile = 1.6 km)

Now, we need to convert 25 miles into km .

25 miles = 25 × 1.6 km

              = 40 km

So, the car can travel 40 km per gallon.

Then, we find out in 1 km how many gallons are used:

40 km = 1 gallons

1\ km = \frac{1}{40}\ gallons

1\ km = 0.025\ gallons

Now, we find out how much gallons of fuel will the car need to travel 30 km:

Gallons of fuel the car need to travel 30 km = 30\times 0.025

                                                                         = 0.75 gallons.

Therefore, the gallons of fuel car need to travel 30 km is 0.75 approximately.

6 0
3 years ago
On March 8, 2017, one U.S. dollar was worth 19.61 Mexican pesos.
zhannawk [14.2K]

On March 8, 2017, one U.S. dollar was worth 19.61 Mexican pesos, 149.23 pesos was worth 7.61 dollars and 63.64 dollars was worth 1247.98 pesos

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

One U.S. dollar = 19.61 Mexican pesos

a) 149.23 pesos = 149.23 pesos * One U.S. dollar per 19.61 Mexican pesos = 7.61 dollars

b) 63.64 dollars = 63.64 dollars *  19.61 Mexican pesos per dollar = 1247.98 pesos

On March 8, 2017, one U.S. dollar was worth 19.61 Mexican pesos, 149.23 pesos was worth 7.61 dollars and 63.64 dollars was worth 1247.98 pesos

Find out more on equation at: brainly.com/question/2972832

#SPJ1

4 0
2 years ago
Janet is buying a $28 necklace. The store reduces the price by 20% and then applies a $2 off coupon. How much will Janet pay for
Leokris [45]
Okay well the starting is 28 dollars, right. But since there is a 20 percent discount, you have to turn 20% to a decimal. That means moving the decimal sign twice to the left to make it .20. From the it would be .20*28, that should equal 5.6. Now, that 5.6 is the amount you have to take away, it is the price of the sale. From then, you subtract which is 28-5.6 which should be 22.4. From that 22.4 you now take away two dollars and then it should be 22.4-2 which should be 20.4. Now that is your answer, 20.4.
4 0
3 years ago
Read 2 more answers
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