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1 - [1/3+1/6]=1/2 of his time remains for study of Chemistry exam.

Solve for x:
3 log(2 x) = 12

Divide both sides by 3:
log(2 x) = 4

Cancel logarithms by taking exp of both sides:
2 x = e^4

Divide both sides by 2:
Answer: |  x = e^4/2=27.30

3010=3 half-lives

160 x 2^-3=20 grams left after 30 days.

336.690375 divided by 3/4, or .75, can be turned into 336.690375 * 5/4, or 1.25, which is 420.86296875.

(3x-4)(9x+5)  =

(3x)(9x) + (3x)(5) + (-4)(9x) + (-4)(5) =

27x^2 + 15x - 36x - 20  =

27x^2 - 21x - 20

2 / 0.4   =

2 / [ 4/10] =

2 / [ 2 / 5]  =

[2 / 1 ] / [2 / 5] =

[2 / 1 ] * [ 5/ 2 ] =

10 / 2  =

5

An infinite number of ways.......here are a couple

log₄ (60)  = log₄ (20 * 3)  = log₄ (20) + log₄ (3)

log₄ (60)  = log₄ (15 * 4)  = log₄ (15) + log₄ (4)  = log₄ (15) + 1

544/7 = 77 remainder 5.

C (9,3)  = 84 ways

sec(150°)  = 1/ cos (150° )  = 1 / [ -√3 / 2]  =    -2 / √3 

cos(300°) =  1/2

csc (-3pi / 4)  =  csc (-135°)  = csc(360° - 135°)  = csc ( 225° )  =

1 / sin (225°)  = 1 / [-1 / √2 ]  =  - √2

Note.....both fractions reduce to 1/2

So   ...    (1/2) / (1/2)  =  (1/2) * (2/1)  = 2/2   =  1

= (-5/17) x (-5/17) = 25/289

It IS a number.   To convert it to a FRACTION   it is 16  1415/10000     if you enter the fraction portion into the calculator on this site it will simplify it to  283/2000

so...   16  283/2000  

The possible draws are

W R W  =   (4/9)(5/8)(3/7)  =   5/42      and

R W R  =  (5/9) (4/8) (4/7)  =  10/63

And the sum of these =

5/42 + 10/63  =

5/18

A = (1/2)bh

16 = (1/2)(12)h    simplify

16 = 6h    divide both sides by 6

[16/6] ft = h = [ 8/3 ] ft   = [2 + 2/3]   ft

You are a beast  

Maybe idk

I looked at the question for 30 seconds and I am randomly guessing b-72

21

You stupid

2 x 2 

   9

4

9

0.4444...

log2+log(11-x^2)-log(1-x)=0    subtract log(2)  from both sides

log(11-x^2)-log(1-x)  = - log 2     and we can use a property of logs to write

log [ (11 - x^2) / (1 -x)]  = - log(2)   which means that

10^-log(2)  = [11 - x^2] / [ 1 - x]

1/2  = [11 - x^2] / [ 1 - x ]       multiply both sides by 1 - x

(1/2) [ 1 - x ] = 11 - x^2        multiply through by 2

1 - x   = 22 - 2x^2       rearrange

2x^2 - x - 21  = 0       factor

(2x -7) (x + 3)  = 0

Setting each factor to 0, the possible answers are x = 7/2  or x = -3

We  must reject the first solution because it makes a log negative in the original equation

So...the only [real] solution  is   x = -3