The pages of a book numbered in order as 1,2,3 ... starting from the first page. In total 81 digits used for all the page numbers. How many pages are there in the book?

A dentist's offi ce and parking lot are on a rectangular piece of land. The area (in square meters) of the land is represented by

What is the estimated quotient of 32.4/3?

An airplane flies 2,783 miles in 5.5 hours. What is the speed of the airplane in miles per hour? Use the equation d=rt, where d is distance, r is rate, and the is time. the airplane's speed is ___ miles per hour

Water World charges fares based on age. Children under 6 years old ride free. Children who are between the ages of 6 and 12 pay half fare. People who are older than 12 but are younger than 65 pay full fare. Those 65 or older pay reduced fares.

Find y'' by implicit differentiation. x2 + 5y2 = 5

Solve the equation 1/4-1/2r=-3/4r

A women-only gym has 60% of its members married. 75% of the married women exercise in the morning and 30% of the single women exercise in the morning. Are being married and exercising in the morning independent? A) Yes.

A car travels a total distance of 300 miles while going an average of 50mph. How long did the car travel? A) 5 hours B) 6 hours C) 15 hours D) 25 hours Will give Brainliest to best answer!

square root 5 is closest to what real number?

What are the zeros of f (x) = x2 + x - 12? O A. x = - 4 and x = 3 O B. x=-6 and x = 2 O c. x=-2 and x = 6 D. x = - 3 and x = 4