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2 years ago

A semicircular window has a diameter of 10m what is the perimeter of the window use 3. 14 for pi ?

Mathematics

1 answer:

Rom4ik [11]2 years ago

7 0

Answer:

25.7 m

Step-by-step explanation:

Semicircles are half circles that are divided at the diameter.

We want to find the semicircle arc.

To do this, just find the circumference of the circle and then divide by 2.

Circumference formula:

2rπ or Dπ

10π = 31.4

31.4 / 2 = 15.7

Now, we have to find the straight line part of the semicircle. The length of that straight line is the diameter. We already know that the diameter is 10.

Add

15.7+10 = 25.7

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Scorpion4ik [409]

Answer: 2/8, 0.432, 87%

Step-by-step explanation:

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2 years ago

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A photograph 5 inches wide by 6 inches high is to be enlarged so that the new height is 20 inches. what will the width of the en

Vika [28.1K]

The new width is 16.6666666667 inches, which can be rounded to 16.7.

Width: 5 ?
Height: 6 20

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3 years ago

Marvin used apples to make apple bread the ratio of apples two loaves is 12:2.What is the equivalent fractions for five loaves o

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Try 6 X 2? Maybe this works

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3 years ago

Two more than negative nine times a number is 56. Find the number and write its equation!

taurus [48]

2 + -9n = 56. -9n = 54. N = -6

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3 years ago

If the probability that the Islanders will beat the Rangers in a game is 0.38, what is the probability that the Islanders will w

natali 33 [55]

Answer:

0.014

Step-by-step explanation:

The probability that the Islanders will win at least 6 out of seven is the probability of them winning exactly 6 games, P(X=6), added to the probability of them winning all seven games, P(X=7).

This problem can be treated as a binomial probability model with probability of success p = 0.38 in each of n = 7 games.

$P(X=x) = \frac{n!}{(n-x)!x!}*p^ x*(1-p)^{(n-x)}$

Thus:

$P(X=6) = 7*0.38^6*0.62\\P(X=6) =0.01307\\P(X=7) = 0.38^7\\P(X=7) =0.00114$

The probability is:

$P(X\geq 6) = 0.01307+0.00114\\P(X\geq 6) = 0.014$

The probability that the Islanders will win at least six out of seven games in a series against the Rangers is 0.014.

3 0

3 years ago