All Answers 355960 Answers

"What's the degrees of an angle with sin 0.8324?

What should I write in the scientific calculator?"

Like so:

.

"Why is atanh(63/31.5) invalid?"

This graph shows why it is invalid in the real number domain

(It does have a complex number domain solution:  0.549 - 1.571i)

.

What is the least common multiple of 8 and 4? Of 5and3?

\(The \ least \ common \ multiple \ of \ 8 \ and \ 4 \ is \ 8\)

\(The \ least \ common \ multiple \ of \ 5 \ and \ 3 \ is \ 15\)

  !

What would x^2-4x^2 be?

\(x^2-4x^2=-3x^3\)     !

this is math

total chairs = 9 rows * 26 chairs each = 234 chairs

234 chairs - 6 chairs = 228 chairs left

convert both to kilograms

1st metal - 2700 g / 1000 = 2.7 kg

2nd metal - 3200 g / 1000 = 3.2 kg

difference b/w 2nd and 1st = 3.2 kg - 2.7 kg = 0.5 kg

| 7 - (24 / |-3|)|

| 7 - (24 / 3) |

| 7 - (8) |

| 7 - 8 |

| -1 |

= 1

same as 12 - 13 = -1

2x+17 = y

0.84 tons= 1680 lbs

1 kg≈ 2.2 lbs

So........1680 lbs * 1 kg / 2.2 lbs  = 763.63 kg

And.......using a proportion

x / 3kg  = 1m^3 / 763.63 kg

763.63 kg * x   =  3 kg * 1 m^3    [ cancel the kg ]

763.63 * x  = 3 m^3     divide both sides by 763.63

x ≈  0.0039 m^3  of soil

59. Let N be rhe number.......so we have

N - log_b 1  =

N - 0  =

N       always true

60.  Never true.....

61.  We are using log a^2  =  2 log a  ......always true

62. Not generally  true......unless the log itself can be easily calculated......example.....

log₃9 + log₂8  =

2 + 3   =  5

63.  log₆ 16 / log₆ 8

Using the change-of-base rule, we have  [log 16/ log 6]/ [log 8/ log6] =

[log 16/ log 6]*  [log 6/ log8]  =   log 16/ log 8   =  log₈ 16  = 4/3

64. log (log N)= N....I don't believe this is ever true

wow dis x harder to find than waldo

Let's state everything in terms of water content......

90% developer  = 10% water

32% developer  = 68% water

Let x be the amount of pure water added to the 2 pints of 90% developer.......and we have

[pure water]* unknown amount of pure water  + 2 pints of 10% water = final amount of 68% water

1x  + .10(2)  =  (x + 2).68    multiply through to clear the decimals

100x + 10(2)   = (x + 2)68   simplify

100x + 20  = 68x  + 136    subtract 20 and 68x from both sides

32x  = 116   divide both sides by 32

x = 3.625 pints  of pure water

You are correct Melody, I'm being quite lazy. Very sorry

what you want to do is substitute an answer for x starting with 0 to 1 to 3 and so on

so for ex

 y=3x-1

y=3x0-1

y=-1 x=0

keep on doing that for around three points and than graph it and all the points should make a line on a graph and that is your answer :D

*facepalm* my bad, forgot there's no y. Thanks Melody :)

If 40% are comedies, then 60% must be action-adventure.....so.....

45 *.60  =  27  are  action-adventure

It's 5 less than -2. Negative numbers are less than 0, so to get smaller the number has to get bigger. -7 is smaller than -2, because it is further away from 0. So -2-5 = -7.

6¹ = 6

15x² - 108x + 108

This is what I would do.

First take out common factors I mean take out the 3

\(=3(5x^2-36x+36)\)

Now I want two numbers that multiply to be 5*36=180

Since the multiple of 5 and 36 is positive the two numbers must both be positive OR both be negative.

The numbers need to add to -36 (the middle one) so they must both be negative.

Here I do use a bit of trial and error

5*36=5*2*3*2*3 = 5*6*6 = 30*6    bingo   the numbers are -30 and -6

-30*-6=180

-30+-6=-36

\(=3(5x-30x-6x+36)\)

Anyway, I hope that helps ;)

Another way to do it is to utilize the quadratic formula from that you can just gives the final factors not the break down of it.

\(\)

Do you mean quotient?   That means divide.

the quotient of 6 and 2 is 3