Shapes that always have perpendicular lines

The perimeter of a regular octagon is equal to 50 cm. Find the length of its side.

Fred can mow a lawn in 60 minutes. rocky can mow the same lawn in 40 minutes. how long does it take for both fred and rocky to mow the lawn if they are working together? express your answer as a reduced fraction.

Solve for x. 5x-6=3x+10 x = 0.5 x = 1 x = 2 x = 8

If s (x) = x - 7 and t (x) = 4x2 - x + 3, which expression is equivalent to

What is a number greater than 1,000 whose prime factorization contains 1 prime number that does not repeat, 1 prime number that repeats three times, and 1 prime number that repeats twice

yoanna has $240 in her saving account and she deposits $20 each week. matt has $600 in his saving account ans withdraws $40 each week. how many weeks will it take until they have the same amount of money

Four teachers share 3 gallons of paint equally. How much paint does each teacher get

Are 4 m larger than 400 dm

Your doctor prescribes you to take 400 mg of medicine every eight hours. How many ounces of medicine do you take in a day

An object In geometry with no width length or height is?