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2 years ago

Urgent! The length of the shorter leg of a 30-60-90 Special Right Triangle is 17 yd long.

Mathematics

1 answer:

Anarel [89]2 years ago

5 0

34 I believe because if the shorter side (30) is half the long side (90) it would be 34

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What is the value of x? Enter your answer in the box. x =

Crazy boy [7]

Answer:

Easy

Step-by-step explanation:

as u can see this a obtuse angle witch mean that x= 190

7 0

3 years ago

A university found that 20% of its students withdraw without completing the introductory statistics course. Assume that 20 stude

bulgar [2K]

Answer:

a) 20.61%

b) 21.82%

c) 42.36%

d) 4 withdrawals

Step-by-step explanation:

This situation can be modeled with a binomial distribution, where p = probability of “success” (completing the course) equals 80% = 0.8 and the probability of “failure” (withdrawing) equals 0.2.

So, the probability of exactly k withdrawals in 20 cases is given by

$\large P(20;k)=\binom{20}{k}(0.2)^k(0.8)^{20-k}$

We are looking for

P(0;20)+P(0;1)+P(0;2) =

$\large \binom{20}{0}(0.2)^0(0.8)^{20}+\binom{20}{1}(0.2)^1(0.8)^{19}+\binom{20}{2}(0.2)^2(0.8)^{18}=$

0.0115292150460685 + 0.0576460752303424 + 0.136909428672063 = 0.206084718948474≅ 0.2061 or 20.61%

Here we want P(20;4)

$\large P(20;4)=\binom{20}{4}(0.2)^4(0.8)^{16}=0.218199402\approx 0.2182=21.82\%$

Here we need

$\large \sum_{k=4}^{20}P(20;k)=1-\sum_{k=1}^{3}P(20;k)$

But we already have P(0;20)+P(0;1)+P(0;2) =0.2061 and

$\large \sum_{k=1}^{3}P(20;k)=0.2061+P(20;3)=0.2061+0.205364 \approx 0.4236=42.36\%$

For a binomial distribution the <em>expectance </em>of “succeses” in n trials is np where p is the probability of “succes”, and the expectance of “failures” is nq, so the expectance for withdrawals in 20 students is 20*0.2 = <em>4 withdrawals.</em>

3 0

3 years ago

1. Sarah went to the farmers market because she needed 5 more apples for her Granny’s jam recipe. The recipe calls for 32 apples

ella [17]

5+x=32
x= the number of apples Sarah had before
5+x=32
subtract 5 from both sides
x=27

6 0

3 years ago

HELP PLS I RLLY NEED IT ILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!

Vilka [71]

Answer:

It’s C

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

are you able to rewrite the term 33 as a product of 11 and another factor? i would really love it for you to reply back as soon

Deffense [45]

Answer:

Product of 11 and 3

Step-by-step explanation:

11 times 3 = 33.
11 is a factor of this and the other factor that is needed, is 3. The result is 33, which fits.

I hope this helped and please mark me as brainliest!

4 0

3 years ago