(40 pts)ill mark brainliest answer
the amount of radioactive isotope decays in half every year. the amount of the isotope can be modeled by
f(x) = 360(1/2)x and f(1) = 180.
match each part of the equation with its description.
1. 360 a. the number of years that have passed
2. ½ b. the amount of isotope after 1 year
3. 1 c. the starting amount
4. 180 d. the rate the isotope decreases

answer:

answer with explanation:

decay formula is given by:

r=rate at which radioactive isotope is decaying.

t=time constant

now, coming to the question ,

the rate at which   radioactive isotope is decaying is given by the formula:

⇒346= initial amount of radioactive isotope

2,600 divided by 80 = 32.5

step-by-step explanation:

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.