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musickatia [10]

3 years ago

11

Carlos deposited $28.50 into his bank account after making a $20.00 withdrawl to pay for some school supplies.Represent these si

tuations as signed member
PLEASE SHOW WORK!!!!

1 answer:

Fynjy0 [20]3 years ago

5 0

20.00 - 8.50 and then you get your answer

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I’ll give brainliest if u answer within 30 mins

Alecsey [184]

Answer:

96.7 maybe or 6.75 or 5.67 or even 56.77

Step-by-step explanation:

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2 years ago

} A rectangle has an area of 25 square feet. A similar rectangle has an area of 200 square feet. What is ratio of the areas of t

ValentinkaMS [17]

Answer:

The ratio of smaller rectangle to larger is 1 : 8.

Step-by-step explanation:

Given that:

Area of smaller rectangle = 25 square feet

Area of larger rectangle = 200 square feet

Ratio of areas of these similar rectangles;

Smaller rectangle : Larger rectangle

25 : 200

1 : 8

Hence,

The ratio of smaller rectangle to larger is 1 : 8.

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2 years ago

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3 years ago

Read 2 more answers

About 3% of children in the United States are allergic to peanuts. Choose three children at random and let the random variable X

Charra [1.4K]

Answer:

0.029991 = 2.9991% conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy

Step-by-step explanation:

For each children, there are only two possible outcomes. Either they are allergic to peanuts, or they are not. The probability of a children being allergic to peanut butter is independent of other children. 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.

3% of children in the United States are allergic to peanuts.

So $p = 0.03$

Three children:

So n = 3,

The probabilities are:

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

$P(X = 0) = C_{3,0}.(0.03)^{0}.(0.97)^{3} = 0.912673$

$P(X = 1) = C_{3,1}.(0.03)^{1}.(0.97)^{2} = 0.084681$

$P(X = 2) = C_{3,2}.(0.03)^{2}.(0.97)^{1} = 0.002619$

$P(X = 3) = C_{3,3}.(0.03)^{3}.(0.97)^{0} = 0.000027$

What is the conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy?

This is

$p = \frac{P(X = 2)}{P(X \geq 1)}$

In which

$P(X \geq 1) = 0.084681 + 0.002619 + 0.000027 = 0.087327$

$P(X = 2) = 0.002619$

So

$p = \frac{0.002619}{0.087327} = 0.03$

0.029991 = 2.9991% conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy

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3 years ago

Find the solution to 2x+3(x+5)=5(x-3)

g100num [7]

Answer: no solution

Step-by-step explanation:

Attached

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2 years ago