ᶦᵐ ʲᵘˢᵗ ᵖᵘᵗᵗᶦⁿᵍ ᵃⁿ ᵃᶜᵃᵈᵉᵐᶦᶜ ᵠᵘᵉˢᵗᶦᵒⁿ ᶠᶦʳˢᵗ ˢᵒ ᶦᵗ ᵈᵒᵉˢⁿᵗ ᵍᵉᵗ ᵗᵃᵏᵉⁿ ᵈᵒʷⁿ ᵃⁿʸᵒⁿᵉ ʷᵃⁿⁿᵃ ᵗᵃˡᵏ ᵗʰᵒᵘᵍʰˀ
An element that is unstable and decays of its own accord is .

a metal
a nonmetal
a rare earth element
a radioactive substance

Use sigma notation to represent the following series for 9 terms.

Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u.s. dollars for every 100 euros. b. gabriella averages 100 u.s. dollars for every 25 euros. c. gabriella can exchange 75 u.s. dollars for 100 euros. d. gabriella can exchange 100 u.s. dollars for 75 euros.

(: the two box-and- whisker plots below show the scores on a math exam for two classes. what 2 things do the interquartile range tell you about the two classes?