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Write out several rows of Pascal's triangle. Circle the first 1 of any row. Go over one entry to the right and then one entry up and to the right, and circle that second entry (see Figure 8.1). Repeat this procedure until you run out of triangle. Then compute the sum of the entries you marked.
Do this procedure for several rows. What numbers do you get? Make a conjecture, then formulate your conjecture as an identity involving binomial coefficients. Finally, prove your conjecture is correct.
Repair-It charges $60 for a service call plus $25 per hour to repair the appliance. Let h represent the number of hours and C represent the total cost for the repair. Write an equation to find the total cost of the bill to fix your appliance after..
For each instructor do the given values for mean and median seem to indicate that instructor's exam scores were skewed right, skewed left, or symmetric?
An anchor weighing 130 lb in water is attached to a chain weighing 2 lb/ft in water. Find the work done to haul the anchor and chain to the surface of the water from a depth of 35 ft.
Saly and marbel Had the same number of cards at first. Aafter saly sold 18 of her cards,mabel had four times as many cards as saly. How many cards did each girl have at first?
What is the area between a raw score of 113 and 126 in a normal distribution with a mean of 100 and a standard deviation of 10 ?
How many weighings of a balance scale are needed to find a counterfeit coin among 12 coins if the counterfeit coin is lighter than the others? Describe an algorithm to find the lighter coin using this number of weighings.
What is the probability that all the aces will appear before any of the tens? Compute Deck of cards probability
What do the in-degree and the out-degree of a vertex in a telephone call graph, as described in Example 4 of Section 10.1, represent? What does the degree of a vertex in the undirected version of this graph represent?
A rocket is launched from atop a 115-foot cliff with an initial velocity of 133 ft/s.
find the rate at which water is being pumped into the tank in cubic centimeters per minute.
If there is a penalty of $5,000 a week for each week the project is late, what is the probability of incurring a penalty of at least $5,000?(Round "Probability" valuesto 4 decimal places, intermediate calculations and final answers to 2 decimal pl..
Find all local maxima and minima and all saddle points of the function and find the volume of the solid in the first octant.
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