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4 years ago

HELP ME ASAP PLEASE!!!

Mathematics

1 answer:

zvonat [6]4 years ago

6 0

Answer:

idk

Step-by-step explanation:

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If a semi circle has a diameter of 5 m what is the area?

klasskru [66]

Answer:

Exact answer = 10.41666666666666666666666666666pi

Estimated answer = 32.70938

Step-by-step explanation:

Semi circle formula: 1/2 * 4/3 * pi * r^3

r = 2.5

1/2 * 4/3 * pi * 2.5^3

2/3 * pi * 2.5^3

2/3 * pi * 15.625

10.416..... * pi

Exact answer = 10.417pi

We can estimate pi as 3.14

So, 10.417 * 3.14 = 32.70938

Exact answer = 10.41666666666666666666666666666pi

Estimated answer = 32.70938

8 0

3 years ago

Never mind no question her

Norma-Jean [14]

Answer:

LMA_OO

Step-by-step explanation:

hahah

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3 years ago

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-8 (1+11a)?????????????????

sdas [7]

The answer would be -8+-88a

3 0

4 years ago

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a camera attached to a telescope photograph the Stars image once every 0.045 seconds how many complete images can the camera cap

RideAnS [48]

Answer:

0.135 images

Step-by-step explanation:

all you have to do is multiply 0.045× 3.

The answer is 0.135.

you have go move the decimals 3 times to the left

5 0

3 years ago

Event A: Spinning violet or yellow on the spinner.

OlgaM077 [116]

Answer:

$\sf P(A \cap B)=\dfrac{1}{4}$

Step-by-step explanation:

$\sf Probability\:of\:an\:event\:occurring = \dfrac{Number\:of\:ways\:it\:can\:occur}{Total\:number\:of\:possible\:outcomes}$

Event A - spinning violet or yellow

Assuming that the spinner has 4 different colors (red, orange, violet and yellow) - see attachment.

$\implies \sf P(A) = \dfrac{2}{4}=\dfrac{1}{2}$

Event B - rolling an even number

Assuming the number cube has 6 sides numbered 1, 2, 3, 4, 5 and 6. Therefore, the even numbers are 2, 4 and 6.

$\implies \sf P(B)=\dfrac{3}{6}=\dfrac{1}{2}$

Events A and B are independent events as the outcome of one event does not affect the outcome of the other event.

For independent events A and B:

$\implies \sf P(A \cap B)=P(A)P(B)$

To find P(A and B), substitute the found values of P(A) and P(B):

$\implies \sf P(A \cap B)=\dfrac{1}{2} \times \dfrac{1}{2}=\dfrac{1}{4}$

6 0

2 years ago

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