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2 years ago

7

Janet has one rectangular-shaped paper with a length of 11/12 foot and a width of 3/4 foot.

1 answer:

Mice21 [21]2 years ago

5 0

Hi bestie lol i’m failing math too and use this app as a lil cheat :)

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Rewrite 2tan3x in terms of tanx

blsea [12.9K]

$2\tan3x=2\tan(2x+x)=\dfrac{2\tan2x+2\tan x}{1-\tan2x\tan x}$

Use the same identity to expand $\tan2x$ .

$\tan2x=\tan(x+x)=\dfrac{\tan x+\tan x}{1-\tan x\tan x}=\dfrac{2\tan x}{1-\tan^2x}$

$\implies2\tan3x=\dfrac{2\dfrac{2\tan x}{1-\tan^2x}+2\tan x}{1-\dfrac{2\tan x}{1-\tan^2x}\tan x}$
$2\tan3x=\dfrac{2\tan x\left(\dfrac2{1-\tan^2x}+1\right)}{1-\dfrac{2\tan^2x}{1-\tan^2x}}$
$2\tan3x=\dfrac{2\tan x\left(2+1-\tan^2x\right)}{1-\tan^2x-2\tan^2x}$
$2\tan3x=\dfrac{2\tan x(3-\tan^2x)}{1-3\tan^2x}$

4 0

3 years ago

Suppose a city with a population of 400,000 has been growing at a rate of 3% per year what will the population be in the next 19

Serggg [28]

Can I please get help also

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2 years ago

How are angle 6 and angle 2 related?

Dafna11 [192]

No clue, we need a graph of some sort

7 0

2 years ago

4. Three friends are collecting football cards. They have 240 cards between them. Zukile has 60 more cards than Adam, and Siya h

frozen [14]

Answer:

Zukile has 105, Adam has 45, Siya has 90

Step-by-step explanation:

Not sure how right this is, but I did: 240=2x+x+(60+x)

Simplify to: 240=60+4x

Simplify to: 180=4x

Simplify to: 45=x

3 0

2 years ago

1. If CA = 12 cm, what is the measure of ER?<br>1CD<br>CD

ioda

Answer:

$ER = 12cm$

Step-by-step explanation:

Given

See attachment for the given shape

Required

Length of ER

The given shape is a parallelogram and the opposite sides are: CA and ER

Given that:

$CA= 12cm$

We have:

$CA = ER$ --- opposite sides of a parallelogram

So:

$ER = 12cm$

6 0

2 years ago