Ask question

Ask question

All categories

3 years ago

12

A survey revealed that 31% of people are entertained by reading books, 39% are entertained by watching TV, and 30% are entertain

ed by both books and TV. What is the probability that a person will be entertained by either books or TV

1 answer:

tester [92]3 years ago

3 0

1% entertained by books
9% entertained by TV

You might be interested in

All the edges of a cube are expanding at a rate of 4 in. per second. How fast is the volume changing when each edge is 10 in. lo

Greeley [361]

Given:

All the edges of a cube are expanding at a rate of 4 in. per second.

To find:

The rate of change in volume when each edge is 10 in. long.

Solution:

Let a be the edge of the cube.

According to the question, we get

$\dfrac{da}{dt}=4\text{ in./sec}$

$a=10\text{ in.}$

We know that, volume of a cube is

$V=a^3$

Differentiate with respect to t.

$\dfrac{dV}{dt}=\dfrac{d}{dt}a^3$

$\dfrac{dV}{dt}=(3a^2)\times \dfrac{da}{dt}$

Putting the given values, we get

$\dfrac{dV}{dt}=(3(10)^2)\times 4$

$\dfrac{dV}{dt}=3(100)\times 4$

$\dfrac{dV}{dt}=300\times 4$

$\dfrac{dV}{dt}=1200\text{ in}^3\text{/sec}$

Therefore, the rate of change in volume 1200 cubic inches per second.

5 0

3 years ago

Write 4 3/7 as a decimal.

kap26 [50]

Step-by-step explanation:

4.04285.

Hope it helps

have a great day

5 0

3 years ago

Read 2 more answers

Picture above 9th grade math (please include properties and steps) will mark brainly thank you!

Nezavi [6.7K]

Answer:

Adition property of equality and subtraction [reperty of equality.

Step-by-step explanation:

5 0

3 years ago

What is 8.2 divided by 2.87

igor_vitrenko [27]

8.2/2.87
=2.857143

:)

Hope this helps!

6 0

3 years ago

Factor the expression. 35g2 – 2gh – 24h2

klasskru [66]

A. 7g-5g=6-4
2g=2
g=2/2
g=1

7 0

4 years ago

Read 2 more answers