Does "concave circle" exist?

Which of the following sets of numbers could be the lengths of the sides of a triangle? a. 3.5 cm, 7 cm, 10.5 cm b. 3.5 cm, 7 cm, 14 cm c. 3.5 cm, 3.5 cm, 3.5 cm d. 3.5 cm, 5 cm, 10 cm

A pool can be filled by one pipe in 8 hours and by a second pipe in 12 hours. How long will it take to fill the pool with both people?

Will Has $2.25 in nickels and dimes. If there are twice as many dimes and nickels how many nickels and dimes does will have

You take a three-question true or false quiz. You guess on all the questions. What is the probability that you will get a perfect score?

An airliner travels 45 miles in 5 minutes. What is it's speed in miles?

Place the digit 2, 4, 7, and 8 in blank blank blank : blanton to create a division problem withe the greatest quotient.

If a 42.9 ft talk flagpole casts a 253.1 ft long shadow then how long is the shadow that a 6.2 ft tall woman casts?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 Which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated?

Do you think x and x by the power of 2 are like terms? Explain using words, diagrams, tables etc.

A square lawn has area 128128 ft squared. ft2. a sprinkler placed at the center of the lawn sprays water in a circular pattern that just covers the lawn. what is the radius of the circle?