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madam [21]
4 years ago
11

I NEED HELP PLEASE !!!

Mathematics
1 answer:
murzikaleks [220]4 years ago
8 0

Answer:

The answer is 1.

Step-by-step explanation:

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Hi, so I was wondering if anyone knows the surface area of a cylinder if the diameter is 7.5? Thank you so much! :)
disa [49]

Answer:

206.17

Key(s):

A = 2\pi \frac{d}{2} h + 2\pi \left(\frac{d}{2}\right)^2

Substitute <em>d</em> for the actual diameter, 7.5, and <em>h</em> for the height, which is 5.

Step-by-step explanation:

A = 2\cdot\pi \cdot\frac{7.5}{2} \cdot5 + 2\cdot\pi \cdot\left(\frac{7.5}{2}\right)^2 ≈ 206.17(2 DP)

6 0
2 years ago
Find the value of n in the equation 6.2n – 3.7n = 85 + 45.
WINSTONCH [101]

Answer:

Value of n is 52

Step-by-step explanation:

So you have equation: 6.2n – 3.7n = 85 + 45

First, you need to collect the like terms and add the numbers on the other side: 2.5n=130

Now, you need to divide both sides of equation by 2.5. And you will get the answer. n=52


4 0
3 years ago
A sphere and a cylinder have the same radius and height. The volume of the cylinder is 27nft3. Which equation gives the volume o
inna [77]

Answer:

The volume of the sphere is V=18\pi\ ft^{3}

Step-by-step explanation:

we know that

The volume of cylinder is equal to

V=\pi r^{2}h

we have

V=27\pi\ ft^{3}

substitute

27\pi=\pi r^{2}h

simplify

27=r^{2}h

Remember that

A sphere and a cylinder have the same radius and height

so

The height of cylinder is equal to the diameter of sphere

h=2r

substitute

27=r^{2}(2r)

13.5=r^{3} -----> equation A

The volume of the sphere is equal to

V=\frac{4}{3}\pi r^{3}

substitute equation A in the formula of the volume of sphere

V=\frac{4}{3}\pi (13.5)

V=18\pi\ ft^{3}

6 0
3 years ago
Read 2 more answers
How do you write 5.9 in expanded form
tresset_1 [31]
<span><u><em>Answer:</em></u>
(5 * 1) + (9 * 0.1).<span>

<u><em>Explanation:</em></u>
To write a number in expanded form you have each digit multiplied by its numbers place and add each digit together. 5 is in the ones place so it becomes (5 * 1).
9 is in the tenths place so it becomes (9 * 0.1).
add them together to get (5 * 1) + (9 * 0.1)</span></span>
3 0
3 years ago
Read 2 more answers
You draw 2 cards from a deck. What’s the probability that one is red and the other is black
Andreyy89

Answer:

26/52 50%

Step-by-step explanation:

52 cards in a deck, 26 are black and 26 are white.

6 0
3 years ago
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