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2 years ago

Evaluate 15 divide by k when k = 3

Mathematics

2 answers:

Zanzabum2 years ago

6 0

15 divided by 3 equals 5 :) Hope this helped!

Galina-37 [17]2 years ago

5 0

You just divide 15 by 3 and that equals 5

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Explain why you can use πr2 to find the area of the base of a cone

olga nikolaevna [1]

The base of a cone is a circle.

The area of a circle is $\pi r^2$ .

Thus, the area of the base of a cone $\pi r^2$ .

The derivation of the formula for the area of a circle involves a bit of calculus, but if you'd like, I can walk you through it.

8 0

2 years ago

What is the common ratio and explicit formula for -2,6,-18,54?

Snezhnost [94]

Answer:

The explicit formula for a given geometric sequence is of the form

$a_{4} =\frac{1}{(a_{1})^4}$

Step-by-step explanation:

Given sequence is ${\{-2,6,-18,54}\}$

Let $a_{1}=-2,a_{2}=6,a_{3}=-18,a_{4}=54$

To find the common ratio r:

$r=\frac{a_{2}}{a_{1}}$

$=\frac{6}{-2}$

$=-3$

Therefore r=-3

$r=\frac{a_{3}}{a_{2}}$

$=\frac{-18}{6}$

$=-3$

Therefore r=-3

Therefore common ratio is -3

Therefore given sequence is geometric sequence.

The explicit formula for a geometric sequence is $a_{n}=a_{1}^{r-1}$ , where common ratio is r.

From given sequence we are having r=-3

Therefore the explicit formula for a given geometric sequence is of the form $a_{4} =a_{1}^{-3-1}$

$a_{4} =a_{1}^{-4}$

$a_{4} =\frac{1}{(a_{1})^4}$

6 0

3 years ago

6.8 (-0.5) - 2 (5.8)

Zina [86]

Answer:

- 15

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

With the drain open, a pool loses water at a rate of 9 gallons per minute. At that rate, how long will it take to drain 486 gall

Snezhnost [94]

divide 486 by 9 = 54

it would take about 54 minutes

8 0

3 years ago

Find the solution for x if |5x – 2| = 13.

Licemer1 [7]

Answer:

x=1 if that's 15 x

Step-by-step explanation:

4 0

2 years ago