Radioactive element has an annual decay rate of 10%. Starting with a 6,754 gram sample of the element, how many grams will be left in 13 years?

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

y-3=-3/2(x+4)

ur very much welcome

i’m kinda new to precal but your answer should be 21. hope i got it right.

step-by-step explanation: