math
16 < √x < 25 256 < x < 625
math
AB = 5 BC = √(-5)^2 + )5^2) = √50 = 5√2 what midpoint?
Math
6/√(x^2 + 4) = 2 square both sides 36/(x^2 + 4) = 4 4x^2 + 16 = 36 4x^2 = 20 x^2 = 5
math
from the first: y = -458 - 8x plug that into the second: -5x + 3y = 221 -5x + 3(-458-8x) = 221 I will let you finish it, once you find x, dont forget to find y from y = -458-8x
Math check
The numbers you see on the graph or find in tables always gives you the probability of below the event. It had asked for the IQ score to be above 93 So your value you have is correct for an IQ of below 93 so for ABOVE 93 it would be 1 - .4013 = .5987
Math check
z-score for 83 = (83-96)/12 = -1.0833 z-score for 99 = (99-96)/12 = .25 so from your tables you should have .5987 - .1393 = .4594 83-96/12=75 is incorrect, the order of operation is critical, and you need brackets like I used in my above solution you have to calculate the nume...
Financial Math Help? (Determine compound period)?
I agree that you have a very hard equation to solve, and there is no simple algebraic method to do so Fortunately, you know that the compounding is probably either semi-annually, quarterly, monthly, daily etc. that is n = 2 , 4, 12 or 365 so lets test it let n = 2 (semi-annual...
math
incomeA = 580 + .042x , where x is total sales incomeB = 880 + .012x to sketch it, you obviously have to scale the x-axis and the income axis
trig
cosØ = x/r = 2/7 so x=2 , r = 7 2^2 + y^2 = 7^2 y^2 = 45 = ± 3√5 but we are in IV , so y = -3√5 sinØ = -3√5/7
math
But they are not "identical" , their constants are different. You have 2 different parallel lines (think of railway tracks)
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