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nataly862011 [7]
3 years ago
9

Brainliest

Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
6 0

Answer: c = 20h − 15

Step-by-step explanation:

The cost should be the total and the text says $20 per hour. Next is the $15 coupon which would take off the amount of $20 per hour. Also such, the answer is c = 20h − 15

Zina [86]3 years ago
4 0

Answer:

c=20h-15

Step-by-step explanation:

It is so because you are taking 15 dollars of the cost.

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48 = 4t + 12<br> How would I solve this someone please respond fast.
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t to the right side and solve.t=9

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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
What temperature is twenty degrees lower than nine degrees Celsius
White raven [17]
9-20= -11 degrees celsius
3 0
3 years ago
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