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3 years ago

Only number 7 please

Mathematics

1 answer:

ahrayia [7]3 years ago

7 0

It’s 12 because 12 divided by 3 is 6 6+7 is 13

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What are the zeros of the functions f(x)=x(x-2)/(x+3)(x-5)??

PSYCHO15rus [73]

$~~~~~~~\dfrac{x(x-2)}{(x+3)(x-5)}=0\\\\\\\implies x(x-2) = 0\\\\\\\implies x = 0,~ x =2\\\\\text{The zeroes are}~ 0~ \text{and}~ 2.$

8 0

2 years ago

(9CQ) The series 1/25+1/36+1/49... is convergent... True or False

Maru [420]

Answer:

True

Step-by-step explanation:

We have the serie:

$\frac{1}{25}+ \frac{1}{36} + \frac{1}{49}+...$

To test whether the series converges or diverges first we must find the rule of the series

Note that:

$5^2 = 25\\\\6^2 = 36\\\\7^2 = 49$

Then we can write the series as:

$\frac{1}{5^2}+ \frac{1}{6^2} + \frac{1}{7^2}+...$

Then:

$\frac{1}{5^2}+ \frac{1}{6^2} + \frac{1}{7^2}+... = \sum_{n=5}^{\infty}\frac{1}{n^2}\\\\\sum_{n=5}^{\infty}\frac{1}{n^2} = \sum_{n=1}^{\infty}\frac{1}{(n+4)^2}$

The series that have the form:

$\sum_{n=1}^{\infty}\frac{1}{n^p}$

are known as "p-series". This type of series converges whenever $p > 1$ .

In this case, $p = 2$ and $2 > 1$ . Then the series converges

6 0

4 years ago

Can someone help me? Kendall owns 39 CD’S, and he buys a new one every week. Raymond only owns 15 CD’S but he buys 3 new ones ea

IgorC [24]

Answer:

7 weeks

Step-by-step explanation:

Let the number of weeks be x

Then Kendal's CD's

39 + x

Raymond's CD's

15 + 3x

Time when they have equal CD's

39 + x = 15 + 3x
3x - x = 39 - 15
2x = 14
x = 7 weeks

6 1

4 years ago

Share $ 4,500 between Ben and Jenny in the ratio 4:5

Naddik [55]

Given,
4:5-4500
Let. 4:5 be,
4x and 5x
To find
Value for each person
x=?
4x+5x=4500
9x=4500
×=4500/9
x=500
4x=500×4=2000
5x=5×500=2500

4 0

3 years ago

8(n + 10) = -8n + 16

dusya [7]

Answer:

n=-4

Step-by-step explanation:

3 0

3 years ago