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1) a) How many 16 bit strings of 0's and 1's contain exactly 7 1's? b) How many 16 bit strings of 0's and 1's contain at least one 1? 2) a) How many ways can 2 integers from 1,2,...,100 be selected so that their sum is even? b) How many ways can 2 integers from 1,2,...,100 be selected so that their sum is odd? 3) Calculate the number of integer solutions for the equation x1 + x2 + x3 = 20 , each xi ? integer; xi ? 0; For ex. one solution is (x1, x2, x3) = (5,7,8) 4) How many integers from 1 to 999 have the sum of their digits equal to 9? For ex. the sum of digits in 54, 621, ... are equal to 9. 5) Calculate the number of ways to place 6 identical books into 9 boxes.
What computer applications can be used to graph systems of equations? Have you ever personally used any applications to graph an equation?
This is all the information I have regarding this problem. I hope its enough for someone. I have no idea what to do with this and I need a detailed step by step answer if possible.
In a survey of children who saw three different shows at Walt Disney World
An irrigation canal has the shape of a trapezoid. Let x = the bottom width, y = the water depth, and theta = the angle of inclination of the sides from the horizontal.
Calculate the standard deviation
The sentence below is a theorem of predicate logic. Show that it is by deriving it from the null set of premises. If any "individual" in the domain has a property, then every individual has it. I need help explaining this and with the derivation.
The law of cosines and Pythagoras theorem.
Construct a tree diagram to represent this situation. A mini license plate for a toy car must consist of a vowel followed by two numbers. Each number must be a 3 or 7.
Circle O and circle P are externally tangent circles. Circle O is tangent to circle P at T, OT = 12, TP = 6. AB is a common external tangent line to both circles. Find AB.
The consumer price index for a new car in 1990 was 110.2, and in 1995 it was 136.5. If the price of the car was $12,880 in 1990, what was the price in 1995?
V3(R) represents the set of vectors in 3D space. What kind of geometrical objects are represented by the various subspaces of V3(R)?
Let f be the function whose graph goes through point (3,6) and whose derivative is given by f'(x) = (1+e^(x))/(x^2). Write the equation of the line tangent to the graph of f at x=3 and use it to approximate f(3.1)
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