Some of the tallest selenite crystals in a cave in chihuahua mexico are 50 feet tall. nathan is 4 feet tall. about how many times as tall as nathan are the tallest crystals

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.