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lubasha [3.4K]
3 years ago
11

(9y® + 2)2 = combine like terms

Mathematics
1 answer:
Vsevolod [243]3 years ago
4 0

Answer:

81y^2+36y+4

Step-by-step explanation:

First: 9y^2= 81y

Next: 2^2= 4

Then: 9y times 2= 18

Last: 18 times 2= 36y

(this : ^2 means squared in case you did not know)

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There are 5 red pens and 10 black pens in a cup. If a person randomly selects 3 of them, what is the probability that they're al
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Answer:

option a)

0.286

Step-by-step explanation:

Given that,

number of red pens in cup = 5

number of black pens in cup = 10

number of pen randomly selected = 3

There are 5 red pens and 10 black pens. So there are 5 + 10 = 15 pens in all.

probability of having all red pens = (5/15 x 4/14 x 3/13)

                                                       = 2/91

probability of having all black pens = (10/15 x 9/14 x 8/13)

                                                           = 24/91

probability that all pen are of same colour = 24/91 + 2/91

                                                                      =  2/7

                                                                      ≈ 0.286

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3 years ago
What is 5.712g=in kg
mel-nik [20]

Answer:

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Step-by-step explanation:

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2 years ago
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X+3x4–21x2<br> 23<br> Determine the polynomial
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Step-by-step explanation:

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Answer:

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