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4 years ago

14

The lowest temperature ever recorded in Minneapolis was −41∘F . The lowest temperature ever recorded in Chicago was −27∘F . Was

the Chicago temperature warmer or colder, and by how many degrees?

1 answer:

Ulleksa [173]4 years ago

8 0

Answer:

-14

Chicago was warmer :)

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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

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4 years ago

Y = 6x - 13<br> 5x - 2y = 5<br> Using the substitution method

tankabanditka [31]

Answer:

x=3, y=5

Step-by-step explanation:

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3 years ago

If f(x) = 2х2 + 3 and g(x) = х2 -7, find (f- а)(x).

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Answer:

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Step-by-step explanation:

What you do is subtract the functions as said by

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so:

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(2x^2+3) - (x^2 -7)

2x^2 -x^2 +3 - 7= x^2 -4

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Because u might need it in the real world.

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Question 15 (5 points)

serg [7]

Answer:

You need to attach the pictures and ask again.

Step-by-step explanation:

I cannot see any attachments.

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