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3 years ago

13

975,462 were downloaded in one day. Round this number to the nearest hundred thousand to estimate how many songs were downloaded

in one day

1 answer:

rewona [7]3 years ago

7 0

Answer:

975,462.00000

Step-by-step explanation:

975,462 rounded to hundred thousand

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One household is to be selected at random from a town. The probability that the household has a cat is 0.20.2 . The proba

dimulka [17.4K]

Answer:

There is a 50% probability that the household has a dog, given that the household has a cat.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that a household has a cat.

B is the probability that a household has a dog.

We have that:

$A = a + (A \cap B)$

In which a is the probability that a household has a cat but not a dog and $A \cap B$ is the probability that a household has both a cat and a dog.

By the same logic, we have that:

$B = b + (A \cap B)$

The probability that the household has a cat or a dog is 0.5

$a + b + (A \cap B) = 0.5$

The probability that the household has a dog is 0.4

$B = 0.4$

$B = b + (A \cap B)$

$b = 0.4 - (A \cap B)$

The probability that the household has a cat is 0.2.

$A = 0.2$

$A = a + (A \cap B)$

$a = 0.2 - (A \cap B)$

So

$a + b + (A \cap B) = 0.5$

$0.2 - (A \cap B) + 0.4 - (A \cap B) + (A \cap B) = 0.5$

$A \cap B = 0.1$

What is the probability that the household has a dog, given that the household has a cat?

20% of the households have a cat, and 10% have both a cat and a dog. So

$P = \frac{A \cap B}{A} = {0.1}{0.2} = 0.5$

There is a 50% probability that the household has a dog, given that the household has a cat.

4 0

2 years ago

May's bakeshop makes triple brownies that cost $1.50 each. Past experience shows 20% of the brownies will spoil. Assuming may wa

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You must add 20 and 40, and divide it.

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3 years ago

Add this problem 0645 + 0745

Citrus2011 [14]

Answer:1,390

Step-by-step explanation: add the top and bottom

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3 years ago

A half of a class and a half of a student got A on a test. If yet another student got an A, then two-thirds of the class would h

svlad2 [7]

Answer:

6 students.

Step-by-step explanation:

let the number of students in class be<em> x</em>

Since Half of the class represents half of the students, therefore

Number of student who got A in test = $\frac{x}{2}$

Now if one more student got A in test then the number of students who got A in test will be $\frac{x}{2} +1$

Now according to equation,

$\frac{2x}{3} = \frac{x}{2} +1$

$\frac{2x}{3} - \frac{x}{2} = 1$

Further solving

$\frac{4x-3x}{6} = 1$

$x = 6$

Hence the total number of students in class is 6.

8 0

3 years ago

Read 2 more answers

6(3 + 2) + (8 – 2 x 4) =

jeka94

Answer:

30

Step-by-step explanation:

First, solve inside the parentheses, then keep going from there.

$6(3+2)+(8-2*4)\\6(5)+(8-8)\\30+(0)\\30$

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2 years ago

Read 2 more answers