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lara31 [8.8K]
3 years ago
10

36 POINTS!!!!!! ANSWER ASAPPPP

Mathematics
1 answer:
Damm [24]3 years ago
4 0

Answer:

I just want the points :/

Step-by-step explanation:

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If a seed is planted, it has a 90% chance of growing into a healthy plant. If 12 seeds are planted, what is the probability that
blondinia [14]

Answer:

0.2301 = 23.01% probability that exactly 2 don't grow.

Step-by-step explanation:

For each seed planted, there are only two possible outcomes. Either it grows into a healthy plant, or it does not. The probability of a seed growing into a healthy plant is independent of any other seed, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

90% chance of growing into a healthy plant.

This means that p = 0.9

12 seeds are planted

This means that n = 12

What is the probability that exactly 2 don't grow?

So 12 - 2 = 10 grow, which is P(X = 10). Then

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 10) = C_{12,10}.(0.9)^{10}.(0.1)^{2} = 0.2301

0.2301 = 23.01% probability that exactly 2 don't grow.

5 0
3 years ago
3.
jok3333 [9.3K]

Answer:

D. –5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
5.2x-y=4.1 1.5x+y=6.7<br> how to solve this problem
MrRa [10]

Answer: x=1.6

y=4.2

Step-by-step explanation:

5.2x - y = 4.1

1.5x + y = 6.7

we will add both equations and you see that the y is getting cancelled

6.7x=10.8

x=10.8/6.7= 1.6

now in any equation we will replace x with 1.6

5.2(1.6)-y=4.1

8.3-y=4.1

  -y= 4.1-8.3

-y=-4.2  multiply by -1

y=4.2

8 0
2 years ago
Read 2 more answers
120 sweets are shared out into three piles, in
Alja [10]

Answer:

35

Step-by-step explanation:

3+4+1=8

120/8=15

3:4:1

45:50:15

50-15=35

please mark as brainliest!!<3

4 0
3 years ago
Use a drawing of counters to show 5 and then +7
Rama09 [41]

red red red red red yellow yellow yellow yellow yellow yellow

hope this helps :)

3 0
3 years ago
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