flbyrne
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Master's in Engineering. Engineering textbook author. Tutoring high school and college math and physics.
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Answered a Question in Science
The time t an object takes to fall from a height h depends on h, not on its mass. The formula to determine that time is as follows: `t=sqrt((2h)/g)` where g is the acceleration due to gravity and... 
Answered a Question in Math
The expression for tangent of the sum of two angles a and b is: `tan(a+b)=(tana+tanb)/(1tanatanb) ` Therefore: ` (tana+tanb)/(1tanatanb)=tan(a+b)` (1) Substitute 2x for a and 6x for b in (1):... 
Answered a Question in Math
Solve the system of linear inequalities by graphing each inequality and overlapping them. To graph the line for ` y<=3/2x+3 ` , find the y intercept by substituting x=0 in y=3/2 x +3: `y=3`.... 
Answered a Question in Math
A pair of solids are called similar when they have the same shape and their corresponding linear measures are proportional. The ratio that compares the sizes is called the scale factor, and it is... 
Answered a Question in Math
The formula for compound interest `A=P(1+r/n)^(nt)` (1) where, A is the value after n periods P is the present value r is the interest rate n is the number of times the interest is compounded...
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