How many bit strings of length 10 contain

a. exactly four 1s?

b. at most four 1s?

c. at least four 1s?

d. an equal number of 0s and 1s?

What is the difference between 20 and - 60

What is the slope of (18,-5) (18,20

What is the greatest composite odd numbers less than 40

Solve the system of equations by substitution. x+y=18 y=8x

1+3+5+7 + ... + 997

Describe a real life sittuation that can be modeled by the equation 2x plus 5 equals 10

How many 9 inch ribbons can be cut from 1 1/2 yards of ribbon?

The value of the cumulative standardized normal distribution at z is 0.8770. the value of z is

Sally's grocery store is selling eggs for $1.56 a dozen. what is the unit price per egg

Write an expression for the total cost of each hotel if n represents the number of nights he will stay. Holiday Inn:$80 a night plus $10 for parking Days Inn:$110 a night with a $50-off coupon