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Nimfa-mama [501]
3 years ago
5

What is the 7th number in the pattern: 1, 4, 9, 16, 25, ...

Mathematics
2 answers:
Viefleur [7K]3 years ago
8 0

the answer would be d. 39

iogann1982 [59]3 years ago
6 0

Answer:

D

Step-by-step explanation:

1 to 4 is adding 3

4 to 9 is adding 5

9 to 16 is adding 7

16 to 25 is adding 9

25 to 36 is adding 11

the sequence is true. any other option does not make the sequence true.

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Pls explain the answer.
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C

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WX is proportional to VX and WV is proportional to VY

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3 years ago
Simplify. 9(x+3)+15x A. 24x+3 B. 24x+27 C. 9x+27 D. 51x
bonufazy [111]
B. 24x+27. You multiply everything out and add the x's
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GarryVolchara [31]

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the green cylinder is 20\pi

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Scientists found that a certain particle of dust doubles every 30 minutes. If the scientists tests this out with 21 grams of the
monitta

Answer: 1.663\times 10^{30}\ gm

Step-by-step explanation:

Given

Population of dust particle doubles every 30 minutes

If the initial sample is 21 grams

The model to predict the population will be

\Rightarrow P=21\cdot 2^{2t}

Where t=time in hours

A day has 24 hours . So, for 2 days time is 48 hours

Population is given by

\Rightarrow P=21\cdot 2^{2\times 48}\\\\\Rightarrow P=21\times 2^{96}\\\\\Rightarrow P=1.663\times 10^{30}\ gm

7 0
3 years ago
Probability question, which I am stuck on!
son4ous [18]

Answer:

land on 3: 36 times

land on 4: 63 times

Step-by-step explanation:

A biased dice is the opposite of a fair dice.

A fair dice has the same probability of landing any of the six numbers: 1/6

The biased dice has different probabilities for its results.

To solve this question, first we need to find the probability of landing a 3.

The sum of all probabilities need to be 1, so:

0.13 + 0.05 + p(3) + 0.21 + 0.19 + 0.3 = 1

p(3) = 1 - 0.88 = 0.12

If we roll the dice 300 times, the expected number of times the dice will land:

on 3: 300 * p(3) = 300 * 0.12 = 36 times

on 4: 300 * p(4) = 300 * 0.21 = 63 times

7 0
3 years ago
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