3 years ago

A mathematician goes to his friend's house and asks his friend to guess the age of his three daughters:

Mathematics

1 answer:

bonufazy [111]3 years ago

3 0

The ages are 3, 3, and 8

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I WILL MARK BRAINLIES If √ x has a decimal approximation of 3.4, then x is between which two integers? In your final answer, inc

lilavasa [31]

If sqrt x is around 3.4
x=(3.4)(3.4)=11.56
So x is in between 11 and 12 or
11
Hope this can help.

6 0

3 years ago

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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

Determine the number of ways to choose a set of 9 pencils from a selection of 10.

enot [183]

The second option. 10

Hope this helps<3

5 0

3 years ago

Can the sum of two mixed numbers equal 2

Licemer1 [7]

No because mixed numbers need atleast a one and a fraction to be a mixed number

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3 years ago

The volume of a triangular prism with base dimensions of 4 cm height and 10 cm base and a prism height of 15 cm is??

jonny [76]

I think you can do this way:
Volume = B*h where B is the area of the base.
B= 4 * 10 = 40
V= 40 * 15
V= 600 cm^3

5 0

3 years ago

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