Is #3pi# a rational, irrational number, natural, whole or integer?

1 answer:

4 0

3pi is irrational because it cannot be expressed as a fraction or decimal. The digits after the decimal point in pi continue on forever without a pattern.

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The sphere shown has a diameter of 24 inches. Which choice is closest to its surface area? Use 3.14 to approximate pi.

tamaranim1 [39]

I don't know what your choices are, but I did the questions for you.
R=D/2, R=12, R=radius,
SA= 4 times 3.14 12 times 12, so,
SA=1809.557368, if you round it to two decimal places, it'll be,
1809.56, so the answer is 1809.56in. squared.

6 0

2 years ago

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If a/\2+1/a/\2=11, then a+1/a=?

Nadya [2.5K]

Answer:

$\pm \sqrt{13}$

Step-by-step explanation:

$\bigg(a + \frac{1}{a} \bigg)^{2} = {a}^{2} + \frac{1}{ {a}^{2} } + 2 \times a \times \frac{1}{a} \\ \\ \bigg(a + \frac{1}{a} \bigg)^{2} = 11 + 2 \\ \\ \bigg(a + \frac{1}{a} \bigg)^{2} = 13 \\ \\ \bigg(a + \frac{1}{a} \bigg) = \pm \sqrt{13}$

5 0

2 years ago

Please help and explain please

butalik [34]

The greatest remainder with 3 is 2, the greatest remainder with 8 is 7, and the greatest remainder with 5 is 4, all because if it was one more then it would not be remaining and it would be without a remainder. Hope this helps!

4 0

2 years ago

You receive an allowance of $10 the first week of every month, and the

GuDViN [60]

Answer: The answer is 100,

Step-by-step explanation:

You would get 10$ for the first week, 20 for the second week, 30 for the third week, and 40 for the fourth week. If you add that up all together you get 100$

5 0

2 years ago

If f(x)= 10 sin(x) – 3 then f (30%) = ?

marissa [1.9K]

Answer:

The value of f(30) is equal to 2.

Step-by-step explanation:

The given expression is :

$f(x)= 10 \sin(x) - 3$

We need to find the value of f(30)

Put x = 30 in above expression.

So,

$f(x)= 10 \sin(30) - 3\\\\=10\times \dfrac{1}{2}-3\\\\=5-3\\\\=2$

Hence, the value of f(30) is equal to 2.

5 0

2 years ago