All Answers 355949 Answers

-1   is  one of the two roots for sure...

It's -1.

=

         x^2 + 12x +11 = 0

           (x+ 11) (x+1) = 0         can you salve it now?  

(1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 45, 48, 50, 54, 60, 72, 75, 80, 90, 100, 108, 120, 135, 144, 150, 180, 200, 216, 225, 240, 270, 300, 360, 400, 432, 450, 540, 600, 675, 720, 900, 1080, 1200, 1350, 1800, 2160, 2700, 3600, 5400, 10800)>>Total = 60

There are 4 prfect cubes: 1, 8, 27, 216

10800 = 2^4 * 3^3 * 5^2 ==Floor[4/3] + 1  *   Floor[3/3] + 1 ==2 x 2 ==4 perfect cubes.

196 ==6,272  x  (1/2)^(29/t), solve for t

196 /6,272 ==(1/2)^(29/t)

0.03125 ==1/2^(29/t)

Take the log of both sides

29/t ==log(0.03125) / log(1/2)

29/t ==5

5t ==29

t ==29 /5 ==5.8 minutes - half-life of a radioactive isotope.

Hä was redest du, das ergibt 12 hahahahaha

(ironisch)

9:45 is 15 mins away from 10:00. but caitlyn reads until 10:37 which is 37 mins away from 10:00. so you would add 15 mins plus 37 mins which would get you 52 mins.

Agreed

11, how old are you or is this a joke?

20   40   60   80 

jack solve 72²³⁴ jack says its 1234 is he correct?  

No, he is not correct.   72²³⁴ would be an enormous number.  

Sorry man, idk.

Volume of a cube:  4/3 pi r³

Sphere with 3 cm    =   4/3 pi (27)  = 36 pi      HEMI-sphere is 1/2 of this = 18 pi

Volume of ORIGINAL sphere = 18 pi = 4/3 pi r³

                                                      3/4 (18 ) = r³        Solve for the original 'r'

two inches

(84-72)/84 * 100% = ..........% discount

Harry gets 4 out of ( 15 + 4 + 6 )   or   4/25 ^ths

4/25  * 250 = £  .................

A graph often helps:

Mike draws six cards from a standard 52-card deck. What is the probability that he draws a card from at least three of the four suits? Express your answer as a simplified fraction.

52C6 = 20358520  ways to choose 6 cards from a deck

lets see what doesn't work

all 6 the same                                                            4*13C6 = 6864

5 the same the other different                              4*13C5*39 = 200772

4 the same and same and 2 the same    4C2*2*13C4*13C2 = 669240

3 the same, 3 the same                            4C2*13C3*13C3   =  490776

6864+200772+669240+490776 = 1367652

20358520-1367652 = 18990868

18990868/20358520 = 0.9328216392940155

factor(18990868) = (2^2*13^3)*2161

factor(20358520) = ((((2^3*5)*7^2)*13)*17)*47

\(\frac{18990868\div 4}{20358520\div 4}=\frac{4747717}{5089630}\)

And I do not think that can be further simplified.

If you are given an answer that is different (with some working or explanation) then please share it with us.

helps a lot 

Angle BAC = 11.81858574º

You answer this type of question with a contour probability map.

I have done the map here:

Two numbers, x and y are selected at random from the interval (0, 3). What is the probability that a triangle with sides of length 2, x, and y exists?

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Thanks for your integer solution helperid

I decided to take a look, using a modification of my contour map and see if I agreed with your answer.

There are 25 integer pairs in total,  and  17 of them are favourable.   So that is  17/25 or      68%

It is a bit different from yours becasue you have said that x and/or y can be 3,   but they can't, the brackets are open.

Here is the pic that you need to use.

How many positive perfect cube factors does 3*6*5*10*12 have?     

Break down each of the listed factors to its prime factors.  

3     •     2 • 3     •     5     •     2 • 5     •     2 • 2 • 3    

Now group like terms.  

2 • 2 • 2 • 2 • 3 • 3 • 3 • 5 • 5   

I see two cubes in there, namely, 2³ and 3³   

So, I see two perfect cubes.  

_.

What is the radius of the circle?

Hello Guest!

\(A=\pi r^2\cdot \frac{80°}{360°}\\ 35\pi =\pi r^2\cdot \frac{80°}{360°}\\ r=\sqrt{\frac{35\cdot 360}{80}}\)

\(r=12.55\)

  !

Find all the values of x.

Hello Guest!

\(\frac{4x - 5}{3x + 5}\geq3+\frac{1}{3x + 5}\\ \frac{4x - 5-1}{3x + 5}\geq3\\ 4x-6\leq 9x+15\\ -21\leq5x\\ \color{blue} -4.2\leq x\)

\(3x+5<0\\ 3x<-5 \)

\(x<-1.6\overline6\)

\(-4.2\leq x<-1.6\overline6\)

  !