2 years ago

Can someone solve this

Mathematics

1 answer:

RSB [31]2 years ago

7 0

a) 110°

b) 39°

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1. m- 7 5.5

Andreas93 [3]

The first answer is 2.5 and I don’t know the last two sorry

5 0

3 years ago

25% of all who enters a race do not complete. 30 haveentered.

nikklg [1K]

Answer:

The probability that exactly 5 are unable to complete the race is 0.1047

Step-by-step explanation:

We are given that 25% of all who enters a race do not complete.

30 have entered.

what is the probability that exactly 5 are unable to complete the race?

So, We will use binomial

Formula : $P(X=r) =^nC_r p^r q^{n-r}$

p is the probability of success i.e. 25% = 0.25

q is the probability of failure = 1- p = 1-0.25 = 0.75

We are supposed to find the probability that exactly 5 are unable to complete the race

n = 30

r = 5

$P(X=5) =^{30}C_5 (0.25)^5 (0.75)^{30-5}$

$P(X=5) =\frac{30!}{5!(30-5)!} \times(0.25)^5 (0.75)^{30-5}$

$P(X=5) =0.1047$

Hence the probability that exactly 5 are unable to complete the race is 0.1047

6 0

4 years ago

Jerry cycles a 36-mile loop every day for two weeks. What is the total

Semmy [17]

The answer is: 18 miles.

: Hope this helps :)

5 0

3 years ago

Help please thank you

Firlakuza [10]

Answer:

(0,-3)

Step-by-step explanation:

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3 years ago

Simplify each of the following:<br> 2<br> 1. (3+4i ) + ( 19 - 5i)

ira [324]

I hope this helps you

(3+19)+(4i-5i)

22-i

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4 years ago