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Len [333]
3 years ago
5

Does anybody know this answer?

Mathematics
2 answers:
creativ13 [48]3 years ago
7 0

Answer:

circumference=2πr

=2×3.14×8.5

=53.38cm

ikadub [295]3 years ago
7 0

Answer:

53.38 cm

Step-by-step explanation:

The formula for finding the circumference of a circle is C = 2πr = πd. Because the problem approximates π = 3.14 all we need to do is multiply 3.14 by 2 and r. It is given that r = 8.5 cm so therefore C is 3.14 x 2 x 8.5 = 53.58 cm.

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What is a real life example of trigonometric ratios
Brut [27]

Answer:

Trigonometry can be used to measure the height of a building or mountains

Step-by-step explanation:

if you know the distance from where you observe the building and the angle of elevation you can easily find the height of the building. Similarly, if you have the value of one side and the angle of depression from the top of the building you can find and another side in the triangle, all you need to know is one side and angle of the triangle.

3 0
3 years ago
There are 45 people waiting in line to ride the carousel. If the carousel can hold 40 people, how many people will have to wait
tangare [24]

Answer:

5 people

Step-by-step explanation:

This is a subtraction problem.

45 - 40 = 5

3 0
3 years ago
A real estate agent needs to estimate the average value of a residential property of a given size in a certain area. The real es
alexira [117]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

95 \% \ the confidence level for z:

\alpha = 1 - 95 \% \\\\

   = 1 - 0.95 \\\\        = 0.05

\to \frac{\alpha}{2} = \frac{0.05}{2} = 0.025\\\\\\to Z \  \frac{\alpha}{2} = Z_{0.025} = 1.96

Calculating the Margin of error:

E =   Z\  \frac{\alpha}{2}  \times ( \frac{\sigma}{\sqrt{n}})

   = 1.96 \times ( \frac{5000}{\sqrt{\sqrt{100}}})\\\\= 980

The population means estimate a 95 % confidence interval is:

\to \bar{x} \frac{+}{-} E\\\\ = \$ 90000 \frac{+}{-} 980

5 0
3 years ago
There is only one correct answer, regarding both questions.
Georgia [21]
The answer to number one is C
and the answer to number two is A
6 0
3 years ago
If g(x) = x - 3 and f(x) = 3 - x2; find f(g(-2))=
const2013 [10]

Answer:

Step-by-step explanation:

g(-2) = -2 -3 = -5

f(-5)= 3 - (-5)^2 = 3 - 25 = -22

5 0
4 years ago
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