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Q. Find the number of ways three letter "words" can be chosen from the alphabet if none of the letters can be repeated?
Solution: There are 26 ways of choosing the first letter, 25 ways of choosing the second letter, and 24 ways of choosing the third letter; thus there are 26.25.24 = 15,600 ways of choosing the three letters. Using the formula of permutations, we have ^{26}P_{3} = 26.25.24 = 15,600
In triangle ABC if angle B = 90 degrees what is the value Tan A/2 in terms of its sided? Solution) tanA=c/b let tan(A/2)=x 2x/(1-x 2 )=c/b,solve for x
Multiply following. Assume that x is positive. (3√x-√y)(2√x-5√y) Solution (3√x-√y)(2√x-5√y) =6√x 2 -15√x√y-2√x√y+5√y
AFIGURE THIS OUT(3) (14) (17) (20) (25)= 8 WHAT ARE THE PROCEDURES (-)(+)(x)(div) BETWEEN EACH NUMBER TO COME UP WITH 8 ?
How do you find the slope of a straight line?
The probability that a certain region in mexico will be hit by a hurricane in any given year is .06. What is the probability that the region will be hit by at least one hurricane i
Sally gets paid x dollars per hour for a 40-hour work week and y dollars for every hour she works over 40 hours. How much did Sally earn if she worked 48 hours? Since she worke
Find interval for which the function f(x)=xe x(1-x) is increasing or decreasing function
properties
A garden shop wishes to prepare a supply of special fertilizer at a minimal cost by mixing two fertilizers, A and B. The mixture is to contain at least 45 units of phosphate at lea
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