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4 years ago

How can you prove that the quadrilateral is a rectangle?

Mathematics

1 answer:

Hunter-Best [27]4 years ago

8 0

Cause two of the sides will be the same(the shortest ones)
The others will also be the same (the longest ones)

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Given that the series kcoskt kº +2 k=1 converges, suppose that the 3rd partial sum of the series is used to estimate the sum of

3241004551 [841]

Answer:

Step-by-step explanation:

Given that:

$\sum \limits ^{\infty}_{k=1} \dfrac{kcos (k\pi)}{k^3+2}$

since cos (kπ) = $-1^k$

Then, the series can be expressed as:

$\sum \limits ^{\infty}_{k=1} \dfrac{(-1)^kk)}{k^3+2}$

In the sum of an alternating series, the best bound on the remainder for the approximation is related to its $(n+1)^{th$ term.

∴

$\sum \limits ^{\infty}_{k=1} \dfrac{(-1)^{(3+1)}(3+1))}{(3+1)^3+2}$

$\sum \limits ^{\infty}_{k=1} \dfrac{(-1)^{(4)}(4))}{(4)^3+2}$

$= \dfrac{4}{64+2}$

$=\dfrac{2}{33}$

5 0

3 years ago

I need the answer if possible

Vera_Pavlovna [14]

Answer:

Move each point 2 left then 3 up then connect the dots

Step-by-step explanation:

5 0

3 years ago

Estimate area pls i

NNADVOKAT [17]

Answer:

The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.

3 0

3 years ago

23 inches = how many feet

Lyrx [107]

1’11”

Explanation:
12in in a ft so 24in = 2ft, but 23in only is 1ft 11in
Ft = ‘
In = “
Hope this helps!

3 0

3 years ago

Read 2 more answers

What's 3 over 10 times 1over 6 ?

velikii [3]

$\frac{3}{10}$ × $\frac{1}{6}$
To multiply, you multiply across. So it would be 3×1=3 and 10×6=60
Which will result in $\frac{3}{60}$ but in order to simplify it, you find a common factor. The common factor is 3. 3÷3=1 and 60÷3=20
The answer is $\frac{1}{20}$

6 0

3 years ago

Read 2 more answers