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V125BC [204]
3 years ago
13

Please help me! This is for my math homework and if i get it wrong I will have to start over

Mathematics
1 answer:
yawa3891 [41]3 years ago
8 0
There were 52 robberies in 2010
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There are (4^9)^5 ⋅ 4^0 books at the library. What is the total number of books at the library?
Sidana [21]
(4^9)^5 \cdot 4^0=4^{9*5} \cdot 1=4^{45}
3 0
3 years ago
You are working in a primary care office. Flu season is starting. For the sake of public health, it is critical to diagnose peop
Aleksandr-060686 [28]

Answer:

E. 0.11

Step-by-step explanation:

We have these following probabilities:

A 10% probability that a person has the flu.

A 90% probability that a person does not have the flu, just a cold.

If a person has the flu, a 99% probability of having a runny nose.

If a person just has a cold, a 90% probability of having a runny nose.

This can be formulated as the following problem:

What is the probability of B happening, knowing that A has happened.

It can be calculated by the following formula

P = \frac{P(B).P(A/B)}{P(A)}

Where P(B) is the probability of B happening, P(A/B) is the probability of A happening knowing that B happened and P(A) is the probability of A happening.

In this problem, we have that:

What is the probability that a person has the flu, given that she has a runny nose?

P(B) is the probability that a person has the flu. So P(B) = 0.1.

P(A/B) is the probability that a person has a runny nose, given that she has the flu. So P(A/B) = 0.99.

P(A) is the probability that a person has a runny nose. It is 0.99 of 0.1 and 0.90 of 0.90. So

P(A) = 0.99*0.1 + 0.9*0.9 = 0.909

What is the probability that this person has the flu?

P = \frac{P(B).P(A/B)}{P(A)} = \frac{0.1*0.99}{0.909} = 0.1089 = 0.11

The correct answer is:

E. 0.11

5 0
3 years ago
What is the correct classification of 18x?. . A.. monomial. . B.. binomial.. C.. trinomial.
kaheart [24]
By definition we have to:
 Monomy: Algebraic expression that consists of a single term or in which the terms that form it are related by the product operation.
 For example:
 ax^2
 It is a monomial.
 In this case we have the following expression:
 18x
 Using the given definition, we have that the expression is a monomial.
 Answer:
 
A .. monomial
8 0
3 years ago
Read 2 more answers
5. Consider the diagram below. Solve for x.
mrs_skeptik [129]

Answer:

41 degrees

Step-by-step explanation:

The three angles need to add up to 180 degrees!

4 0
2 years ago
Which number is between 1/6th and 1/4th
bazaltina [42]
1/5...
This question should be relatively easy for a high schooler...
 
3 0
3 years ago
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