All Answers 358087 Answers

Significant figures

tan^-1 (1.3 / 3.1) = about 22.75°

$$\\I\;think\;its\\ 4\frac{37}{100}$$

√-25 =

√(-1 * 25)  =

√(-1) * √25     note ... i^2 = -1    so  .... i  = √-1

i * 5   =

5i

If this number is a multiple of 7 and 3, it must be divisible by 21

So 

384 mod 21   =  6

So...this number must be 

304 - 6 = 378

And 378 factors as.. 2 x 3 x 3 x 3 x 7 =  2 x 3 x 3 x 21

The name say it... Is Infinite...

u cant calculate how big is, just is Infinite!

The answer is 705 cm.

We have :

tan 50  = 305.5 / d     where d is the distance we're trying to find  .....rearranging, we have....

d = 305.5 / tan 50 = about 256.34 ft  = 256 ft to the nearest foot.....

16x^2 - y^2 +16y -128 =0   add 128 to both sides

16x^2 - y^2 +16y  = 128     complete the square on y

16x^2 - (y^2 - 16y + 64) = 128 - 64    simplify

16x^2 - (y - 8)^2  = 64       divide both sides by 64

x^2 / 4  - (y - 8)^2  / 64   = 1

This is a hyperbola with a center of (0, 8)......a = 2 and b = 8...the focal points are at (±√68, 8)

$${\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{4}} = {\mathtt{28}}$$

The answer is 62291.82

7 is the answer

$$It isn't when you learn! :D$$

Ok

Ha!!!

I feel so proud! Thanks Melody, seriously thanks. I never though i'd take LaTeX this far (although this is nothing compared to what you do) I always thought I'd never understand these symbols everywhere.

I done it!    :D

PS:   ( Thanks for the compliments that gave me the Spirit to succeed  in this) Lol

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

This graph might help:

.

Good luck!!!

BJ if you can deal with us then this test will be a walk in the past.

Believe in yourself, you can do it!

64-3/8=63 5/8=ans

3*11=33

1/2*11=5.5

33+5.5=38.5=ans

I would call that standard form! If you mean scientific form it is 1.55*10^4

Ok, an internet search suggests that standard form is another way of saying scientific form!

.

Turn these upside down to get the X on top

x/sin(32) = 16/sin(98)

Now multiply both sides by sin(32)

x = 16*sin(32)/sin(98)

Now use a calculator.

.

I meant it as a joke, Melody.