The measure of the angle formed by two intersecting perpendicular lines is 90°.

A. true

B. false

A Clark types 18 letters for staff members in one day this is 60% of the total number of letters he writes the whole day how many letters does he type in one day?

What two numbers can multiply to get + 15, however, add together to get - 9?

How many positive numbers from 1 to 999 have the sum of their digits equal to 8? For ex. the sum of digits in the numbers 62, 431, ... are equal to 8.

The diagram represents the circular floor under the dome of a state capitol building. The diameter is 40 ft. Find the circumference of the floor. Approximate as 3.14.

Round 6.21371192 to the nearest mile

Rene is going to the lake to visit some friends. If the lake is 60 miles away, and Rene is driving at 40 miles per hour the entire time, how long will it take her to get to the lake? a) 50 minutes b) 70 minutes c) 90 minutes d) 110 minutes

The manager of a grocery store reports that there is a 12 percent chance that a customer buys apples during a shopping trip, a 5 percent chance that a customer buy apples and carrots, and a 17 percent chance that a customer buys apples or carrots.

Put in order least to Greatest. 2/3 0.5 5/9

Two poles of lengths 10 ft and 15 ft are set up vertically with their bases on horizontal ground 12 ft apart. Find the distance between the tops of the poles.

Write the equation of the circle: center at (0,0), diameter 18