3 years ago

Explain why numbers with a 5 in ones place or not prime numbers

Mathematics

1 answer:

Virty [35]3 years ago

4 0

Because you can't divide 5 evenly

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Find dy/dx using implicit differentiation cos x + sin y = 1

777dan777 [17]

Differentiate both sides with respect to x, using the chain rule for the sine term:

$\cos(x) + \sin(y) = 1$

$\implies -\sin(x) + \cos(y)\dfrac{\mathrm dy}{\mathrm dx} = 0$

Solve for dy/dx :

$-\sin(x) + \cos(y)\dfrac{\mathrm dy}{\mathrm dx} = 0 \\\\ \cos(y) \dfrac{\mathrm dy}{\mathrm dx} = \sin(x) \\\\ \boxed{\dfrac{\mathrm dy}{\mathrm dx} = \dfrac{\sin(x)}{\cos(y)}}$

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2 years ago

Which measurement is a good estimate for the area of a circle if the diameter is 18 feet?

Rudik [331]

Answer:

If the diameter is 18 then the radius r=9 so the area is:

πr2=81π≅254.469

Step-by-step explanation:

Explanation:

The area of a circle is given by the formula πr2 where r is the radius.

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2 years ago

What is the total surface area ?

ser-zykov [4K]

Answer:

The answer is 126.

Step-by-step explanation:

If you multiply 2*9 first, you get 18. Then multiply 18 by 7. The answer will be 126. I hope this helps.

8 0

2 years ago

Is an arithmetic sequence a function?

Sphinxa [80]

Yes it is a linear function

3 0

2 years ago

Two cylinders are similar. The radius of cylinder a is 5.6 in. The radius of cylinder b is 1.4 in. If the hwight of cylinder b i

sleet_krkn [62]

The answer is 16in.

Let the radius and height of cylinder A be Ra and Hb respectively and the radius and height of cylinder B be Rb and Hb respectively.

Using similar shapes:
Ra/Ha= Rb/Hb
5.6/Ha=1.4/4
Ha=(4×5.6)/1.4
Ha=22.4/1.4
Ha=16in

6 0

2 years ago