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3 years ago

Ratio equal to 90:18

Mathematics

1 answer:

Vadim26 [7]3 years ago

6 0

90:18

divide using 3 on both sides

90:18

30:6

10:2

now lets use 2

10:2

5:1

5:1 is the equal ratio to 90:18

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meriva

Answer:

Step-by-step explanation:

4×2=2in

100÷2=50%

so it is c

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3 years ago

Read 2 more answers

A center for medical services reported that there were 295,000 appeals for hospitalization and other services. For this group, 4

pshichka [43]

Answer:

a) 0.0025 = 0.25% probability that none of the appeals will be successful.

b) 0.0207 = 2.07% probability that exactly one of the appeals will be successful.

c) 0.9768 = 97.68% probability that at least two of the appeals will be successful

Step-by-step explanation:

For each appeal, there are only two possible outcomes. Either it is succesful, or it is not. The probability of an appeal being succesful is independent of other appeals, so we use the binomial probability distribution 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.

45% of first-round appeals were successful.

This means that $p = 0.45$

Suppose 10 first-round appeals have just been received by a Medicare appeals office.

This means that $n = 10$

(a) Compute the probability that none of the appeals will be successful.

This is P(X = 0).

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

$P(X = 0) = C_{10,0}.(0.45)^{0}.(0.55)^{10} = 0.0025$

0.0025 = 0.25% probability that none of the appeals will be successful.

(b) Compute the probability that exactly one of the appeals will be successful.

This is P(X = 1).

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

$P(X = 1) = C_{10,1}.(0.45)^{1}.(0.55)^{9} = 0.0207$

0.0207 = 2.07% probability that exactly one of the appeals will be successful.

(c) What is the probability that at least two of the appeals will be successful

This is $P(X \geq 2)$

Either less than two appeals are succesful, or at least two are. The sum of the probabilities of these events is decimal 1. So

$P(X < 2) + P(X \geq 2) = 1$

$P(X < 2) = P(X = 0) + P(X = 1) = 0.0025 + 0.0207 = 0.0232$

$P(X \geq 2) = 1 - P(X < 2) = 1 - 0.0232 = 0.9768$

0.9768 = 97.68% probability that at least two of the appeals will be successful

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3 years ago

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There are several ways that can help someone recover after they are injured. After the injury occurs, it is best to go to the doctor or hospital to get the injury, if need be, checked on or fixed. Another thing that can help is if the person rests and does not do any heavy-lifting or do to many activities that can strain the injury. After an injury occurs, if you do not rest there is more of a likelihood that you can damage it more and also rest helps the body heal. There are also several medicine's that are meant to help relieve pain after an injury occurs.

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The function table shows the rule y = 13 - 4x. Which number correctly completes the table?

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Answer:

Step-by-step explanation:

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3 years ago

If a seed is planted, it has a 90% chance of growing into a healthy plant. If 10 seeds are planted, what is the probability that

polet [3.4K]

Answer:

it would be 5%

Step-by-step explanation:

10%÷2=0.05%

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3 years ago