3 years ago

A new operation is defined by a△b=a^2-b/b-a^2 I HAVE A BRAINLIEST TO GIVE OUT!

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

8 0

Step-by-step explanation:

a = 5

b = -3

25 - -3/ -3 - 25

= 28 / -28

= -1

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Zoe had a board 5 1/4 feet long she cut off a piece now the board is 3 5/6 feet long how long was the piece she cut off

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5 1/4-3 5/6=1 5/12

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3 years ago

Misaki cut some wood for a bookcase she is building.She needs to find how many 1

den301095 [7]

Answer:

3ft + 2ft?

Step-by-step explanation:

sorry i would take this with a bucket of salt its prob not c0rr3t

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=9%5C%3A%20%20%5C%3A%20%20%5Cfrac%7B%20%5Csin%28%20%5Ctheta%29%20%7D%7B1%20%2B%20%20%5Ccos%28%2

PIT_PIT [208]

Option (b) is your correct answer.

Step-by-step explanation:

$\large\underline{\sf{Solution-}}$

Given Trigonometric expression is

$\rm :\longmapsto\:\dfrac{sin\theta }{1 + cos\theta }$

So, on rationalizing the denominator, we get

$\rm \: = \: \dfrac{sin\theta }{1 + cos\theta } \times \dfrac{1 - cos\theta }{1 - cos\theta }$

We know,

$\purple{\rm :\longmapsto\:\boxed{\tt{ (x + y)(x - y) = {x}^{2} - {y}^{2} \: }}}$

So, using this, we get

$\rm \: = \: \dfrac{sin\theta (1 - cos\theta )}{1 - {cos}^{2}\theta }$

We know,

$\purple{\rm :\longmapsto\:\boxed{\tt{ {sin}^{2}x + {cos}^{2}x = 1}}}$

So, using this identity, we get

$\rm \: = \: \dfrac{sin\theta (1 - cos\theta )}{{sin}^{2}\theta }$

$\rm \: = \: \dfrac{1 - cos\theta }{sin\theta }$

<u>Hence, </u>

$\\ \red{\rm\implies \:\boxed{\tt{ \rm \:\dfrac{sin\theta }{1 + cos\theta } = \: \dfrac{1 - cos\theta }{sin\theta } }}} \\$

3 0

3 years ago

Read 2 more answers

Ur wrong its acutully 39.8 not 39.75 u came up with the wrong answer.

alukav5142 [94]

It is 39.8 your right

3 0

4 years ago

I need help, please?

Drupady [299]

x is timed by .5 in the first one (A) which would make it the linear function.

6 0

3 years ago

Read 2 more answers