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mr Goodwill [35]
3 years ago
6

The diameter of a semicircle is 8 kilometers. What is the semicircle's radius?

Mathematics
1 answer:
Wittaler [7]3 years ago
7 0

Answer:

Since, the raduis is twice the diameter, we divide the diameter by 2 which 4. The radius is 4 km.

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Please I am begging!!!
insens350 [35]

Answer:

4,3

Step-by-step explanation:

1 plus 3 equals 4.

-3 plus 6 equals 3.

3 0
2 years ago
Find the derivative
zalisa [80]

First use the chain rule; take y=\dfrac{x+5}{x^2+3}. Then

\dfrac{\mathrm df}{\mathrm dx}=\dfrac{\mathrm df}{\mathrm dy}\cdot\dfrac{\mathrm dy}{\mathrm dx}

By the power rule,

f(x)=y^2\implies\dfrac{\mathrm df}{\mathrm dy}=2y=\dfrac{2(x+5)}{x^2+3}

By the quotient rule,

y=\dfrac{x+5}{x^2+3}\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{(x^2+3)\frac{\mathrm d(x+5)}{\mathrm dx}-(x+5)\frac{\mathrm d(x^2+3)}{\mathrm dx}}{(x^2+3)^2}

\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{(x^2+3)-(x+5)(2x)}{(x^2+3)^2}

\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{3-10x-x^2}{(x^2+3)^2}

So

\dfrac{\mathrm df}{\mathrm dx}=\dfrac{2(x+5)}{x^2+3}\cdot\dfrac{3-10x-x^2}{(x^2+3)^2}

\implies\dfrac{\mathrm df}{\mathrm dx}=\dfrac{2(x+5)(3-10x-x^2)}{(x^2+3)^3}

6 0
3 years ago
Mattie’s house consist of two stories and an attic.the first floor is 8 5/6 feet tall the second floor is 7 1/2 feet tall and th
Trava [24]

Answer:

The attic is  

7

feet tall

Step-by-step explanation:

a=73/3-53/6-17/2

to check Ur work: 53/6+17/2+7

hope u got ur answer

8 0
2 years ago
Read 2 more answers
The square with side length 2 cm is dilated by a scale factor of 7/3 is the dilated image larger or smaller than the original im
qwelly [4]
Length of square side= 2 cm
Dilation factor= 7/3
Simplify 7/3= 2.33
Apply the dilation factor:
Length of side= 2.33 x 2 = 4.67 cm
As the length of the side of the square is increased in length, which means the dilated image is larger than the original image.

Answer: Larger than then original. 
8 0
3 years ago
A cabinetmaker buys 3.5 liters of oak varnish. The varnish costs $4.95 per liter. How much does 0.5 liters of varnish cost?
victus00 [196]

Answer:

$2.47

Step-by-step explanation:

The cabinetmaker would have paid $13.31 for everything.

5 0
3 years ago
Read 2 more answers
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