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3 years ago

What is the a area of a circle with the diameter of 12

Mathematics

2 answers:

Sonja [21]3 years ago

6 0

Answer:

A=113.1

Step-by-step explanation:

Andre45 [30]3 years ago

3 0

Answer:

Step-by-step explanation:

a=pir^2

r=1/2d

a=pi36

a=113.1

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Peter wants to use 75-watt lightbulbs and other electronics in his tree house. He has one outlet with a maximum of 900 watts. Wh

ohaa [14]

Expression is 900 - 75n

Step-by-step explanation:

Step 1: Maximum watts that can be used is 900W. Find amount of watts used by n light bulbs.

⇒ Watts used by n light bulbs = 75 × n = 75n

Step 2: To find the remaining amount of wattage, subtract the maximum possible W and the watts used by the light bulbs.

⇒ 900 - 75n

8 0

3 years ago

Read 2 more answers

What is the length of Side B C given that Side C G is 2.5 inches and Side G B is 2.5 StartRoot 3 EndRoot inches? Round to the ne

Tanya [424]

Answer:

10.8 inches

Step-by-step explanation:

This is most likely correct because if it is 2.5 and 3 end root then you could probably multiply and ad an get your answer.

6 1

3 years ago

Find dy/dx when y = Ln (sinh 2x). A. 2 cosh 2x B. 2 sech 2x C. 2 coth 2x D. 2 csch 2x

givi [52]

The function given is a composite function. Let's work from the outside in:
$y=(ln(sinh(2x)))$

First step:
$\frac{d}{dx}[y]= \frac{d}{dx}[ln(sinh(2x))]$

Now, let's work it out:
$\frac{dy}{dx} = \frac{1}{sinh(2x) } * \frac{d}{dx}[sinh(2x)]$

Next step:
$\frac{dy}{dx} = \frac{1}{sinh(2x) } * cosh(2x) * \frac{d}{dx}[2x]$

Next step:
$\frac{dy}{dx} = \frac{1}{sinh(2x) } * cosh(2x) *2$

Simplify:
$\frac{dy}{dx} = \frac{2cosh(2x)}{sinh(2x) }$

Simplify further:
$\frac{dy}{dx} = 2 (\frac{cosh(2x)}{sinh(2x)})$

Remember that:
${\frac{cosh(x)}{sinh(x)} = coth(x)$

So, your final answer is:
$\boxed{ \frac{dy}{dx} = 2coth(2x) }$

So, your answer is C. Hope I could help you!

8 0

4 years ago

What is the area and perimeter for this ?

Natalija [7]

Area : 282.8 perimeter : 68.4 if not then i might have done sum wrong

3 0

2 years ago

Read 2 more answers

The test score for a class pf 101 students are computed. What is the percentage of score equal to or grater than the third quart

irina [24]

Answer:

Step-by-step explanation:

The third quartile is at 75% of total of number of students.

So percentage score great or equal to this is 25%.

4 0

2 years ago