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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

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A pair of jeans normally costs £40.

creativ13 [48]

Answer:

£30

Step-by-step explanation:

100% - 25% =75%

75% of £40

=£30

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3 years ago

A family drove 1 /5 of the total distance to the coast on the first day. They drove another2/5 of the distance on the second day

ser-zykov [4K]

1/5+2/5=3/5 answer C

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3 years ago

Over a two hour time period a snail moved <br> 46<br> inches. How far is this in yards?

Anton [14]

It would be exactly 1.2778 yards.

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3 years ago

Find the surface area.

Margaret [11]

Answer:

1014cm^2

Step-by-step explanation:

find the area of one side and times it by 6 (bc a cube has 6 sides)

13×13=169

169×6=1014

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3 years ago

What is the volume of a hemisphere with a radius of 2.3m round to the nearest tenth of a cubic meter

kodGreya [7K]

Answer: $25.5 m^{3}$

Step-by-step explanation:

If the volume of a sphere is

$V=\frac{4}{3} \pi r^{3}$

Where $r=2.3 m$ is the radius

The volume of a hemisphere is half the volume of the total sphere:

$V_{hemisphere}=\frac{V}{2}=\frac{\frac{4}{3} \pi r^{3}}{2}$

$V_{hemisphere}=\frac{2}{3} \pi r^{3}$

Solving this equation:

$V_{hemisphere}=\frac{2}{3} \pi (2.3 m)^{3}$

Finally:

$V_{hemisphere}=25.48m^{3} \approx 25.5 m^{3}$

5 0

2 years ago