2.60 If 3 books are picked at random from a shelf con- taining 5 novels, 3 books of poems, and a dictionary, what is the probability that (a) the dictionary is selected? (b) 2 novels and 1 book of poems are selected?

Q: I am three times as old as my son.Five years later,I sall be two and half time as old as my son.How…

A: In the question, I am three times as old as my son Five years later,I sall be two and half time as…

Q: John can finish a job alone in 5 hours. Jack can finish the same job alone in 6 hours. How long does…

A: John can finish a job alone in 5 hours. Jack can finish the same job alone in 6 hours.

Q: Five years ago, Marcus was three times as old as Theresa. In two years, Marcus will be twice as old…

A: To find the present age of Theresa.

Q: Deanna can finish a certain job in 10 days. Jessica can finish the same job in 14 days. If Deanna…

A:

Q: Sara is 6 years older than her brother. In 5 years she wil be twice as old as her brother. What is…

A: suppose sara age=x     her brother age=y x=6+y.........1 in 5 years (X+5)=2(y+5)

Q: The sum of two numbers is 20 and the square root of their product is 9. What are the numbers? Solve…

A: To solve the system of equations using fixed-point iteration, we will express the equations in terms…

Q: Emmy can type at a constant rate of 1 page every 4 minutes. If she has to type a 5-page article, but…

A: Emmy can write at a constant rate of 1 page in 4 minutes. Hence she will take 5 ×4 = 20 mins two…

Q: Josh live 1 4/5 miles from the park. So far he walked 2/3 of the distance from his house to the…

A: Here we have to find out the how many distance josh walk

Q: Simon is a third of his dads age. In 12 years his dad will be twice as old as Simon. What are their…

A:

Q: To join an online learning community, you must pay their initial fee of 300.00 Php that lets you…

A: When I'll pay 300.00 Php, then with initial pay I also able for 1st month. Then for remaining (7-1)=…

Q: One -half of Heather's age two years from now plus one-third of her age three years ago is twenty…

A:

Q: Olivia puts 100 dollars into a fund and continuously does so at the end of each month. Although, the…

A: It will form an arithmetic progression (A.P.) with first term a1=100 and common difference is d=5.…

Q: If bacteria in a certain culture double every hour. Assuming the culture has 250 bacteria at the…

A:

Q: Andrea is 3 times as old as Pauline, 10 years from now Andrea will be twice as old as Pauline, How…

A: Let the present age of Pauline be x. Andrea is 3 times as old as Pauline. Therefore the age of…

Q: Tom is 4 more than twice Andrews age. Sarah is 8 less than 5 times Andrew ‘s age. If Tom and Sarah…

A:

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.