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myrzilka [38]
3 years ago
10

A urn contains 8 balls 4 orange 3 red and 1 green . Two are selected without replacement​

Mathematics
1 answer:
Orlov [11]3 years ago
4 0

Answer:

0.25

Step-by-step explanation:

Since, in the question , it is not mentioned that two balls of any specific colour,

the probability of getting two balls is: \frac{2}{8}\\= \frac{1}{4}

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N-8+n=1-4n solve for n​
MrRissso [65]

Answer:

n=-N/5+9/5

Step-by-step explanation:

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Please help me!!!!!!!!!!!
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3 0
3 years ago
What is the square root of 225 and 226? Also what is a short cut I could use to figure this out more easily?
Reptile [31]
The square root of 255+266 is 241. I can't help you with shortcuts as I'm bad at explaining, but I'm sure there are websites that can help you.
6 0
3 years ago
Read 2 more answers
What is the surface area of a conical grain storage tank that has a height of 37 meters and a diameter of 16 meters? Round the a
jek_recluse [69]
The surface area of a cone is equal to the base plus the lateral area.

The base is a circle, and has a diameter of 16 meters.
The radius is always half the diameter, so it is 8 meters.
The area of a circle = πr², where r is the radius. π(8)² = 64π ≈ 201.06193
The area of the base is ≈ 201.06193.

To find the lateral area of the cone, we need to find the slant height.
Since the height, radius, and slant height of the cone form a right triangle, we can use the Pythagorean Theorem to find the slant height with what we are given.
radius² + height² = slant height²
8² + 37² = slant height²
64 + 1369 = slant height²
1433 = slant height²
slant height = √1433

The lateral area of a cone is equal to πrl, where r = radius and l = slant height.
πrl = π(8)(√1433) ≈ 951.39958
(there are other formulas which do the same thing, but it doesn't matter.)

Now we add the lateral area and base together to find our surface area.
201.06193 + 951.39958 = 1152.46151 which rounds to C. 1,152 m².
8 0
3 years ago
Briana bought a lot of snacks from Dollar General last night for $193.84, not including tax. If the tax rate was 9%, how much wa
jeyben [28]

I believe the total is $211.27.

After doing multiple searches on the internet, I believe that tax rate is a percentage of the product that is added to the total cost.

9 percent of 193.84 is 17.4456, which rounds up to 17.44, and 17.44 added to 193.84 is 211.27.

<em>Please, if something isn't correct here, don't refrain to tell me, and I will correct my mistake. Thank you.</em>

6 0
3 years ago
Read 2 more answers
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