precalculus
3 pi /2 < x < 2 pi mean x lie in IV quadrant tan ( x ) = + OR - sqrt [ 1 - cos ( x ) ^ 2 ] / cos ( x ) in this case: tan ( x ) = + OR - sqrt ( 1 - 0.6 ^ 2 ) / 0.6 tan ( x ) = + OR - sqrt ( 1 - 0.36 ) / 0.6 tan ( x ) = + OR - sqrt ( 0.64 ) / 0.6 tan ( x ) = + OR - 0.8 / 0...
Math
C = d pi C = Circumference d = diameter C = d * pi In this case: C = 0.4 pi C = 0.4 * 3.14 = 1.256 m 1 km = 1000 m 1000 / 1.256 = 796.17834395 turns 797 turns rounded for full turn
math
Ó mean summ
math
( a + b + c) ^ n = Ó n ! / ( i! j! k! ) a ^ i b ^ j c ^ k where i + j + k = n So exponent of x ^ 3 y ^ 2 z ^ 2 = 7! / (3! 2! 2!) = 5040 / ( 6 * 2 * 2 ) = 5040 / 24 = 210
Please help me...Please....Math
x1/2 = [ - b + OR - sqrt ( b ^ 2 - 4 a c ) ] / 2a
Please help me...Please....Math
Diiscriminant : D = b ^ 2 - 4 a c in this case : a = - 1 b = - 1 c = 30 D = ( - 1 ) ^ 2 - 4 * ( - 1 ) * 30 D = 1 + 4 * 30 = 1 + 120 = 121 x1/2 = - b + OR - sqrt ( b ^ 2 - 4 a c ) / 2a in this case : x1 = - b + sqrt( b ^ 2 - 4 a c ) / 2a x1 = [ - ( - 1 ) + sqrt ( 121 ) ] / [ 2 ...
triple digit digit product
269 2 * 6 * 9 = 108
math
3 sqrt ( 8 ) * 2 sqrt ( 5 ) = 3 * 2 * sqrt ( 8 ) * sqrt ( 5 ) = 6 sqrt ( 8 * 5 ) = 6 sqrt ( 40 ) = 6 sqrt ( 4 * 10 ) = 6 sqrt ( 4 ) * sqrt ( 10 ) = 6 * 2 * sqrt ( 10 ) = 12 sqrt ( 10 )
Math
( 42 / 24 ) * 50.88 = 1.75 * 50.88 = 89.04 $
Pre-Calculus
12. 3 / 12 = 3 / ( 3 * 4 ) = 1 / 4 5 / 15 = 5 / ( 5 * 3 ) = 1 / 3 ( x + 3 / 12 ) / ( 4 x - 5 / 15 ) = ( x + 1 / 4 ) / ( 4 x - 1 / 3 ) = ( 4 x / 4 + 1 / 4 ) / ( 4 x * 3 / 3 - 1 / 3 ) = [ ( 4 x + 1 ) / 4 ] / [ ( 12 x - 1 ) / 3 ] = ( 4 x + 1 ) * 3 / [ 4 * ( 12 x - 1 ) ] = ( 3 / 4...
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