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agasfer [191]
1 year ago
7

If Elephant grass grows 3 3/4 inches a day how many inches will it grow in 9 days

Mathematics
1 answer:
Lana71 [14]1 year ago
4 0

the elephant grass should grow 33.75 inches in 9 days.

you take the number of inches it grows times the number of days:

3.75 (aka 3 3/4) times 9 is 33.75.

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Evaluate the expression (35+ 7) {6 – 5).
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Answer:

The answer is 41

Step-by-step explanation:

(35 + 7) (6 - 5)

(42) × (1) = 41

Thus, The answer is 41

<u>-TheUnknownScientist</u>

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Seeds are often treated with fungicides to protect them in poor-draining, wet environments. A small-scale trial, involving six t
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Answer:

0.0076 = 0.76% probability that all five plants emerged from treated seeds

Step-by-step explanation:

The plants were chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

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x is the number of successes.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

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)!}

In this question:

6 + 6 = 12 seeds, which means that N = 12

6 treated, which means that k = 6

Five sprouted, which means that n = 5

What is the probability that all five plants emerged from treated seeds?

This is P(X = 5). So

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 5) = h(5,12,5,6) = \frac{C_{6,5}*C_{6,0}}{C_{12,5}} = 0.0076

0.0076 = 0.76% probability that all five plants emerged from treated seeds

3 0
3 years ago
I'm a little bit confused about this question.
Virty [35]

Answer:

4

Step-by-step explanation:

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