All Answers 358090 Answers

A decimal I think. You arent serious are you?

Here's a helper:

Roman Numerals:

M=1000 D = 500 I 1 XXXII 32 LXIII 63 XCIV 94 II 2 XXXIII 33 LXIV 64 XCV 95 III 3 XXXIV 34 LXV 65 XCVI 96 IV 4 XXXV 35 LXVI 66 XCVII 97 V 5 XXXVI 36 LXVII 67 XCVIII 98 VI 6 XXXVII 37 LXVIII 68 XCIX 99 VII 7 XXXVIII 38 LXIX 69 C 100 VIII 8 XXXIX 39 LXX 70 IX 9 XL 40 LXXI 71 EX. X 10 XLI 41 LXXII 72 DI 501 XI 11 XLII 42 LXXIII 73 DL 550 XII 12 XLIII 43 LXXIV 74 DXXX 530 XIII 13 XLIV 44 LXXV 75 DCCVII 707 XIV 14 XLV 45 LXXVI 76 DCCCXC 890 XV 15 XLVI 46 LXXVII 77 MD 1500 XVI 16 XLVII 47 LXXVIII 78 MDCCC 1800 XVII 17 XLVIII 48 LXXIX 79 CM 900 XVIII 18 XLIX 49 LXXX 80 XIX 19 L 50 LXXXI 81 XX 20 LI 51 LXXXII 82 XXI 21 LII 52 LXXXIII 83 XXII 22 LIII 53 LXXXIV 84 XXIII 23 LIV 54 LXXXV 85 XXIV 24 LV 55 LXXXVI 86 XXV 25 LVI 56 LXXXVII 87 XXVI 26 LVII 57 LXXXVIII 88 XXVII 27 LVIII 58 LXXXIX 89 XXVIII 28 LIX 59 XC 90 XXIX 29 LX 60 XCI 91 XXX 30 LXI 61 XCII 92 XXXI 31 LXII 62 XCIII 93

Means x factorial:

x! = x * (x-1) * (x-2)*....* 2 * 1

Eg:

6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

3! = 3 x 2 x 1 = 6

Special cases and notes:

--> 0! = 1

--> Cant get factorials of a negative number or fractions, must be positive whole numbers

Lets say the fencing makes a circle:

Using circumference of a circle:

40 = 2 * pi * r

   r = 6.366.......

Area = pi * radius^2

       = pi * 6.366^2

       = 127.32 meters squared

21.... jk 24

You are such a great reporter! TitaniumRome was not. 😐

Here's a certificate of achievement for your awesome reporting!

Hi!

3,3,7 won't work because  3 + 3 < 7 .... and this violates the Triangle Inequality  which says that, for all non-degenerate triangles, the sum of any two sides of a triangle is greater than the remaining side

The correct answer is the last set

1, 7, 7  .....  7 + 1 > 7  and 7 + 7 > 1

Adding the equations, we have

2x = 4    so x = 2

And since x - y =  6  ... then, substituting in for x, we have

2 - y  = 6    rearrange  by adding y to both sides and subtracting 6 from both sides

2 - 6  = y

-4  = y

So  (x, y)  = (2, -4)

3,3,7 

Using the Law of Cosines, let us determine  angle BAC, first

So we have

28^2 = 50^2  + 50^2 - 2(2500)cos BAC

cos^-1 [ (28^2  - 5000) / (-5000)]  = BAC =  about 32.52°

And since AC = AB  then ACB = [180 - 32.52]/ 2 = about 73.74°

And ACD is supplemental to this = about 106.26°

And using the Law of Sines

sin ADC / 50  = sin 106.26 / 52   . so...using the sine inverse, we have

sin^-1 (50sin106.26/ 52)  =  ADC = about 67.38°

So angle CAD = 180 - 106.26 - 67.38 = about 6.36°

Now...we can find CD with the Law of Sines, again

CD / sin 6.36  = 52 / sin 106.26

CD  = 52  sin 6.36 / sin 106.26 =  6 units

24 -Sp1ker7

And don't forget that today is Cinco De Mayo and Revenge of The Fifth Day!

I'm not trying to be Titanium Rome here, but how could you mention that Alan became moderator, your account having problems with someone, or some simple math, BUT YOU FORGOT ALL ABOUT STAR WARS DAY?????

lol XD     

Area of a triangle is 1/2 Base x Height.

This is an isosceles triangle with base sqrt(28), so you can split it in half to form 2 right angled triangles with base = sqrt(28) / 2  ,  hypotenuse = sqrt(70) and height = x.

Use pythagorus to get the height of the right angled triangle:

x = sqrt[70 - (28/4)] = sqrt(63)

Therefore area of Isosceles triangle = 2 x area of right angled triangle = 2[1/2 * (sqrt28)/2 * sqrt(63)]

                                                                                                    = 21 units ^2

Gahh CPhill beat me to it...

fnghmtgmufy for points