Can someone help me with this question I retake this picture

Mathematics

1 answer:

Eva8 [605]3 years ago

5 0

Answer:

1. 5*10=50

2. Draw an array that's 4 by 5, 2 by 10, or 1 by 20

Step-by-step explanation:

For the first problem, since there are 5 rows and 10 columns, the expression is 5*10. This is equal to 50. For the second problem, the array could either be an array with 2 rows and 10 columns, 4 rows and 5 columns, 1 row and 20 columns, or vice versa. Hope this helps!

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Does (-2)^n/( 3^n+1) converge or diverge?

hodyreva [135]

$\left|\dfrac{(-2)^n}{3^n+1}\right|=\dfrac{2^n}{3^n+1}$

As $n\to\infty$ , the sequence $a_n=\left(\dfrac23\right)^n$ converges to zero.

If you're talking about the infinite series

$\displaystyle\sum_{n\ge0}\dfrac{(-2)^n}{3^n+1}$

well we've shown by comparison that this series must also converge because we know any geometric series $\sum\limits_n r^n$ will converge as long as $|r|$ .

3 0

2 years ago

Please include an explanation so I know how to do this. Thanks!

klasskru [66]

Hello there,

So we are trying to find out is the angle ∠BAC in degrees.

So what we are going to do is. . .25- (2x-10)°.

That answer would be -2x+35.

So ∠BAC= -2x+35°.
Hope this helps.

~Jurgen