ElectricPavlov

12.20 (1.35) = $16.47

If   a^2 + b^2  = c^2      where c is the long side, it IS a right triangle according to Pythagorean theorom

4.8^2 + 6.4^2 = 64 = 8^2     so yes, it is a right triangle

x=1st integer   then x+1  x+2 and x+3   all add up to 326

x +  x+1  + x+2  +  x+3 = 326

4x +6 = 326

4x= 320

x = 80

the Second number is 81

Thanx for the follow-up, Alan !    These questions can frequently be vague and subject to several interpretations....Yah?

Hey Alan......check your math   (1/4)^4 = 1/256   This just doesn't seem right.......the MORE tries you make the LESS chance of your desired outcome??

I'm never quite sure about these probabilities, but let's look at it another way      each try has a  3/4 chance of NOT being what you want  (3/4)^4 =81/256 chance you will NOT get what you want......isn't that a 175/256 chance you WILL get what you want?     I do not know.......

U = energy = 1/2 c v^2   = 1/2 (470 x 10^-6)(15^2) = .052875 j

L x W = area of rectangle       L = W-10 (given)

(w-10) x w = 119

w^2 - 10w = 119

w^2 - 10w +25 = 119 +25   (completing the square)

(w-5)^2 = 144

w-5 = +-12

w = 5 +-12  =  17   or -7 (throw out -7)

w=17    L = w-10 = 7

You are describing:  cos(a) x sin(a)/cos(a)    Just like an ordinary fraction, the cos(a)  will cancel each other and you are left with     sin(a)

= (-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