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3 years ago

Help me :) im giving brainiest

Mathematics

2 answers:

bagirrra123 [75]3 years ago

8 0

Hey there! Your answer is:

-1/4 or -0.25

I really hope this helps you out. Have a really nice day!

skad [1K]3 years ago

7 0

Answer:

I think it 0.25=1/4

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What is the volume? 7 yd 10 yd 6 yd

Tju [1.3M]

Answer:

210 yd³

Step-by-step explanation:

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The area of the base

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3 years ago

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Step-by-step explanation:

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3 years ago

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Korolek [52]

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3 years ago

In general, the probability that a blood donor has Type A blood is 0.40.Consider 8 randomly chosen blood donors, what is the pro

postnew [5]

Answer:

The probability that more than half of them have Type A blood in the sample of 8 randomly chosen donors is P(X>4)=0.1738.

Step-by-step explanation:

This can be modeled as a binomial random variable with n=8 and p=0.4.

The probability that k individuals in the sample have Type A blood can be calculated as:

$P(x=k) = \dbinom{n}{k} p^{k}(1-p)^{n-k}\\\\\\P(x=k) = \dbinom{8}{k} 0.4^{k} 0.6^{8-k}\\\\\\$

Then, we can calculate the probability that more than 8/2=4 have Type A blood as:

$P(X>4)=P(X=5)+P(X=6)+P(X=7)+P(X=8)\\\\\\P(x=5) = \dbinom{8}{5} p^{5}(1-p)^{3}=56*0.0102*0.216=0.1239\\\\\\P(x=6) = \dbinom{8}{6} p^{6}(1-p)^{2}=28*0.0041*0.36=0.0413\\\\\\P(x=7) = \dbinom{8}{7} p^{7}(1-p)^{1}=8*0.0016*0.6=0.0079\\\\\\P(x=8) = \dbinom{8}{8} p^{8}(1-p)^{0}=1*0.0007*1=0.0007\\\\\\\\P(X>4)=0.1239+0.0413+0.0079+0.0007=0.1738$

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3 years ago

Given the functions m(x)=4x-11 and n(x)=x-10, solve m[n(x)] and select the correct answer

LekaFEV [45]

M[n(x)] = 4(x - 10) - 11 = 4x - 40 - 11 = 4x - 55

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3 years ago