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3 years ago

Which of the following is NOT one of the main components of the cell theory?

Mathematics

2 answers:

Damm [24]3 years ago

6 0

Answer:

number 1 so a (=

Step-by-step explanation:

Vesna [10]3 years ago

3 0

Number 1. “ cells must contain DNA”

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Name three numbers between 3.65 and 3.66

Dmitry_Shevchenko [17]

Three numbers between 3.65 and 3.66 could be:

1) 3.651
2) 3.655
3) 3.657
4) 3.659

Hope this helps! :)

7 0

3 years ago

What percent of 30 is 15

yulyashka [42]

Answer:

50%

Step-by-step explanation:

0.3x = 15

0.3x x 10 = 15 x 10

3x = 150

3x/3 = 150/3

x = 50

50%

3 0

3 years ago

Read 2 more answers

Sin 2x + tan 2x = 4tan/ 1- tan^4 prove that

nalin [4]

$\dfrac{4\tan x}{1-\tan^4x}=\dfrac{4\tan x}{(1-\tan^2x)(1+\tan^2x)}$
$=\dfrac{4\tan x}{(1-(\sec^2x-1)\sec^2x}$
$=\dfrac{4\tan x\cos^2x}{2-\sec^2x}$
$=\dfrac{4\sin x\cos x}{2-\sec^2x}$
$=\dfrac{4\sin x\cos^3x}{2\cos^2x-1}$
$=\dfrac{2\sin2x\cos^2x}{\cos2x}$
$=2\tan2x\cos^2x$
$=2\tan2x\left(\dfrac{1+\cos2x}2\right)$
$=\tan2x(1+\cos2x)$
$=\tan2x+\sin2x$

7 0

3 years ago

This year, Tanner gave 28 piano performances. That is 50% fewer than last year.

jonny [76]

Tanner preformed 56 times last year. 50% is half so you just have to multiply 28 by 2

5 0

3 years ago

Read 2 more answers

Suppose a ball is dropped from a height of 16 feet. Each time it drops h feet, it rebounds 0.81h feet. Find the total distance t

Roman55 [17]

When the ball is first dropped, it falls $h$ feet. On the first bounce, it rebounds $0.81h$ feet, which means on the second "drop" it must travel $0.81h$ feet again. On the second bounce, the ball rebounds $0.81(0.81h)=0.81^2h$ feet, and on the third drop falls the same distance. And so on.

So there are two directions to track:

$\text{downward: }\displaystyle h+0.81h+0.81^2h+\cdots=\sum_{n=0}^\infty 0.81^nh$
$\text{upward: }\displaystyle 0.81h+0.81^2h+\cdots=\sum_{n=1}^\infty 0.81^nh$

The total distance is the sum of these two:

$\displaystyle\sum_{n=0}^\infty 0.81^nh+\sum_{n=1}^\infty 0.81^nh=h+2h\sum_{n=1}^\infty 0.81^n$

Recall that for an infinite geometric sum, you have

$\displaystyle\sum_{n=0}^\infty r^n=1+\sum_{n=1}^\infty r^n=\frac1{1-r}$

provided that $|r|$ . So the total distance traveled by the ball is

$h+2h\left(\dfrac1{1-0.81}-1\right)\approx9.53h$

Starting with a height of $h=16$ means the total distance is about 152.42 ft.

4 0

3 years ago