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2 years ago

What is the approximate perimeter of a semicircle with a radius of 6 cm?

1 answer:

8 0

So we want to know what is a perimeter of a semicircle whos radius is 6cm. So to find the perimeter we can use the formula for the circle and divide that in half. Because the semicircle is exactly one half of a circle. So the formula for the perimeter for a circle is O=2r*pi and for the semicircle is one half of that: O=r*pi=6*3.14=18.84cm.

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A stadium brings in 16.25 million per year. It pays football related expenses of 13.5 million and stadium expenses of 2.7 millio

Alexxx [7]

Answer:

Option C) $50,000

Step-by-step explanation:

We are given the following in the question:

Earning of stadium = 16.25 million per year.

Football expense = 13.5 million per year

Stadium expenses = 2.7 million per year

Profit earned by stadium =

Earning of stadium - Football expenses - Stadium expenses

$=16.5-13.5-2.7\\=0.05\text{ millions }\\=0.05\times 10^6\\=50,000\text{ Dollars per year}$

Thus, the correct answer is

Option C) $50,000

4 0

2 years ago

Help me I can’t seem to figure this one out

yanalaym [24]

Answer:

See below

Step-by-step explanation:

Expand it a bit to see:

= $\sqrt[5]{ 2^5 * 7 * x^5 * x^5 * x * y^5 * y^3}$

= $2x^2y \sqrt[5]{7xy^3}$

4 0

1 year ago

A population of butterflies grow in such a way that each generation is simply 1.2 times the previous generation. There were 275

Sergio [31]

y=275(1.2)^14

y=3530.775

round to the nearest whole number:

3531

3 0

2 years ago

The value of is between 4.7 and 4.8. Which of the following is a more precise approximation of ?

Nataly_w [17]

Answer: D. between 4.79 and 4.8

Step-by-step explanation:

The square root of 23 (√23) is 4.79583152331. We can obviously eliminate A and B. C and D is left. C is wrong because if we approximate the square root of 23, which is 4.79583152331, we get 4.79. 4.79 > 4.78, so it can't be C. Hope this helps :)

4 0

3 years ago

Help please Factorise x²-x-56 its due in 4 minutes

Iteru [2.4K]

Answer:

(x-8)(x+7)

Step-by-step explanation:

using quadratic formula we have

x= $\frac{-b+-\sqrt{b^{2}-4*a*c}}{2*a}$

we have:

x^2-x-56=0

a= 1 b=-1 c=-56

so we have:

x=(-(-1)+-sqrt(1^1-4*(1)*(-56)))/(2*1)

x=1+-sqrt(1-4*(-56))/(2)

x=(1+-sqrt(225))/2

x=(1+-15)/2

so we have the roots:

x1=(1+15)/2 =8

x2=(1-15)/2=-7

so the answer is (x-8)(x+7)

7 0

2 years ago

Read 2 more answers