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Luden [163]
1 year ago
10

Todd caught four times as many fish this year than Erie. Together they caught a total of 75 fish. Which of these equations repre

sents how many fish they caught.A. 4x = 75B. x + 4x =75C. x + 4 =75D. 4x + 75 = x
Mathematics
1 answer:
insens350 [35]1 year ago
7 0

We have that :

• Todd ,4x

,

• Erie, x

,

• The variable, x ,is the number of fish.

,

• The total was ,75, fish.

Then, we have:

x+4x=4x+x=75

With this equation, we can represent how many fish they caught (option B).

We can check this.

x+4x=75\Rightarrow5x=75\Rightarrow\frac{5}{5}x=\frac{75}{5}\Rightarrow x=15

In this way, Todd caught 60 (15*4) and Erie 15 (both 75).

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A pharmaceutical company receives large shipments of ibuprofen tablets and uses an acceptance sampling plan. This plan randomly
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Answer:

0.7208 = 72.08% probability that this whole shipment will be accepted.

Step-by-step explanation:

For each tablet, there are only two possible outcomes. Either it meets the required specifications, or it does not. The probability of a tablet meeting the required specifications is independent of any other tablet, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

4% rate of defects

This means that p = 0.04

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This means that n = 26

What is the probability that this whole shipment will be accepted?

Probability that at most one tablet does not meet the specifications, which is:

P(X \leq 1) = P(X = 0) + P(X = 1)

Thus

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{26,0}.(0.04)^{0}.(0.96)^{26} = 0.3460

P(X = 1) = C_{26,1}.(0.04)^{1}.(0.96)^{25} = 0.3748

Then

P(X \leq 1) = P(X = 0) + P(X = 1) = 0.3460 + 0.3748 = 0.7208

0.7208 = 72.08% probability that this whole shipment will be accepted.

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Answer:

Step-by-step explanation:

Frequency table for the height of the seedlings,

Height (in inches)        Number of seedlings

          \frac{1}{2}                                      2              

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          \frac{5}{8}                                      2

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Now we can draw the line plot as attached.

Average height of the seedlings = \frac{2(\frac{1}{2})+4(\frac{3}{4})+2(\frac{5}{8})+2(\frac{7}{8})}{2+4+2+2}

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                                                      = \frac{7}{10}

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