hello this is 6th grade hw and can someone help me the area and perimeter for all of them and plz explain how you got them

Mathematics

1 answer:

Scilla [17]2 years ago

4 0

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How do you factor: 5x^3+30x^2+45x (please show steps)

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3 years ago

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Daniel works at a nearby electronic store he makes 15% on everything he sells if he Sells a laptop for 293.00 how much money doe

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2 years ago

Find the radius of convergence, r, of the series. ∞ xn 2n − 1 n = 1 r = 1 find the interval, i, of convergence of the series. (e

Bingel [31]

Assuming the series is

$\displaystyle\sum_{n\ge1}\frac{x^n}{2n-1}$

The series will converge if

$\displaystyle\lim_{n\to\infty}\left|\frac{\frac{x^{n+1}}{2(n+1)-1}}{\frac{x^n}{2n-1}}\right|$

We have

$\displaystyle\lim_{n\to\infty}\left|\frac{\frac{x^{n+1}}{2(n+1)-1}}{\frac{x^n}{2n-1}}\right|=|x|\lim_{n\to\infty}\frac{\frac1{2n+1}}{\frac1{2n-1}}=|x|-\lim_{n\to\infty}\frac{2n-1}{2n+1}=|x|$

So the series will certainly converge if $-1$ , but we also need to check the endpoints of the interval.

If $x=1$ , then the series is a scaled harmonic series, which we know diverges.

On the other hand, if $x=-1$ , by the alternating series test we can show that the series converges, since

$\left|\dfrac{(-1)^n}{2n-1}\right|=\dfrac1{2n-1}\to0$

and is strictly decreasing.

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3 years ago

A bit hard. thank you if u can do it for me? <3

Lostsunrise [7]

The triangle shown is a right triangle shown by the little square inside of it.

Area of a triangle is 1/2 x height x base

Rotating the shown triangle so the square is at a bottom corner the height is 6 and the base is 6

Area = 1/2 x 6 x 6 = 18 square cm

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2 years ago

What is the lcm of 5,6, and 7

BigorU [14]

The least common multiple (LCM) of 5, 6, and 7 is 210.

5 × 42 = 210
6 × 35 = 210
7 × 30 = 210

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2 years ago

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