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Sidana [21]
4 years ago
5

The lifespans of gorillas in a particular zoo are normally distributed. the average gorilla lives 20.8 years; the standard devia

tion is 3.1 years. use the empirical rule (68-95-99.7%) to estimate the probability of a gorilla living between 11.5 and 27 years
l
Mathematics
1 answer:
dezoksy [38]4 years ago
5 0

Answer:

Step-by-step explanation: 2.35%+95%

Answer is 97.35%

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the answer is number 1

Step-by-step explanation:

8 0
3 years ago
In a class there are 25 students 15 are boys what percentage are girls​
tankabanditka [31]

Answer:

40%

Step-by-step explanation:

Total students = 25

Boys = 15

Girls = 25 - 15 = 10

Percent of girls = 10/25

Percent is out of 100.

=> 10/25 = x/100

=> Cross multiply

=> 25 * x = 100 * 10

=> 25x = 1000

=> 25x/25 = 1000/25

=> x = 40

So, 40% are girls

7 0
3 years ago
Rationalize the denominator of square root of negative 49 over open parentheses 7 minus 2 i close parentheses minus open parenth
navik [9.2K]

The answer is the option d, which is: d) \frac{-77+21i}{130}

The explanation for this problem is shown below:

1. Smplify the denominator and rewrite the numerator in this form:

\frac{7i}{7-2i-4-9i} \\\frac{7i}{3-11i}

2. Multiply the denominator and the numerator by the conjugated (3+11i) and simplify the expression, as following:

\frac{7i(3+11i)}{(3-11i)(3+11i)} \\ \frac{21i+77i^{2}}{121+9}  \\ \frac{-77+21i}{130}

3. As you can see, you obtain the expression shown in the option mentioned above.

3 0
4 years ago
When 2 less than 3 lots of a number is doubled the result is 5
Marysya12 [62]
The equation is 2(3x-2)=5
8 0
4 years ago
Read 2 more answers
Which element should be used to help clarify a complicated idea in a text ?​
True [87]

Answer:  Paraphrasing

Step-by-step explanation:

your welcome :)

3 0
3 years ago
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