What is the solution to the following 21+x=13

The side of square whose parimeter is 20m

Is the number 191 a perfect square? explain.

If Mags (m) is 34 years old, how old is Vector (V) m=v+2 A. V=64 B. V=68 C. V=36 D. V=32

20% tip on a bill of $44.12

983 divided by 6 in base time blocks

A submarine is at 400 feet below sea level. If it ascends 150 feet and then descends 320 feet, how far is it above or below sea level?

Two angles form a straight angle. what is the one angle measures 89°. what is the measure of the other angle?

Matthew needs $3,600 to buy a used car. He has already saved $2,130. He earns $24.50 per hour working as a Math tutor. How many hours does he need to work at his job in order to buy the car?

34 cup. A serving of vegetable soup is 23 cup. The restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. How many more cups of chicken noodle soup did they sell than cups of vegetable soup?

Which is taller? Statue of Liberty or the tallest tree in the world?