Un elemento tiene las siguientes abundancias naturales y masas isotópicas: 90,92% de abundancia con 19,99 amu, 0,26% de abundancia con 20,99 amu y 8,82% de abundancia con 21,99 amu. Cuál es su la masa atómica promedio de este elemento

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.

Seattle, washington is known for being rainy. one day last month, 8 inches of rain fell in 1 1/2 hours. what us the rate of the rainfall expressed in ft per plzzz write a proportion i will give you 100 points

Write an inequality for this sentence the quotient of a number and -5 increased by 4 is at most 8