math
In google type : square root of 0.31428 from divison method When you see list of results click on : meritnation com /ask.../what.../squares...square-roots/2168377
Math
3 ^ x = 7 x * lgt ( 3 ) = lgt ( 7 ) x = lgt ( 7 ) / lgt ( 3 ) x = 0.845098 / 0.477121 x = 1.771245 lgt is the logarithm with base 10
Algebra
A = Area = 60 in ^ 2 b = base = 10 in h = height A = b h / 2 60 = 10 * h / 2 Multiply both sides by 2 120 = 10 * h Divide both sides by 10 12 = h h = 12 in h = sqrt ( x ) Square both sides h ^ 2 = x x = h ^ 2 = 12 ^ 2 = 144 in ^ 2
Math
50 % = 50 / 100 = 0.5 A team won 0.5 * 60 = 30 games x = the number of games the team must win 60 % = 60 / 100 = 0.6 Proportion : ( 30 + x ) / ( 60 + x ) = 0.6 Multiply both sides by 60 + x 30 + x = ( 60 + x ) * 0.6 30 + x = 36 + 0.6 x Subtract 30 to both sides 30 + x - 30 = 3...
Math
100 / 60 = 2 * 5 * 10 / ( 2 * 3 * 10 ) = 5 / 3 = 1.6666666 1.6666 * 100 % = 166.66666 % 166.66666 % - 100 % = 66.66666 % Correct answer.
algebra ----
# 27 - 5 x ( x - 4 ) = - 5 x * x - 5 x * ( - 4 ) = - 5 x ^ 2 + 20 x = 20 x - 5 x ^ 2 # 28 Correct # 29 Correct
algebra -
( 4 m ^ 2 + m - 2 ) + ( - m ^ 2 - 3 m ) = 4 m ^ 2 + m - 2 + ( - m ^ 2 ) + ( - 3 m ) = 4 m ^ 2 + m - 2 - m ^ 2 - 3 m = 4 m ^ 2 - m ^ 2 + m - 3 m - 2 = 3 m ^ 2 - 2 m - 2
algebra -
# 21 3 x ^ 2 ( 2 x - 2 ) = 3 x ^ 2 * 2 x - 3 x ^ 2 * 2 = 6 x ^ 3 - 6 x ^ 2 = 6 x ^ 2 ( x - 1 ) # 22 ( 2 x ^ 2 ) ( 6 x ^ 2 ) = 6 * 2 * x ^ 2 * x ^ 2 = 12 x ^ 4 # 23 ( 4 m ^ 2 + m - 2 ) + ( - m ^ 2 - 3 m ) = 4 m ^ 2 + m - 2 - m ^ 2 - 3 m = 3 m ^ 2 - 2 m - 2 # 25 ( 3 x ^ 2 - x - ...
geometry
100 cm = 1 m d = diameter d = 56 cm = 0.56 m C = Circumference C = d * pi C = 0.56 * 22 / 7 = 12.32 / 7 = 1.76 m 1 km = 1000 m 1000 / 1.76 = 568.181818
math
4 ^ ( x - 1 ) = 4 ^ x / 4 ^ 1 = 4 ^ x / 4 4 ^ x - 4 ^ ( x - 1 ) = 24 4 ^ x - 4 ^ x / 4 = 24 4 * 4 ^ x / 4 - 4 ^ x / 4 = 24 3 * 4 ^ x / 4 = 24 Multiply both sides by 4 3 * 4 ^ x = 96 Divide both sides by 3 4 ^ x = 32 x * log ( 4 ) = log ( 32 ) Divide both sides by log ( 4 ) x =...
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