At 10: 00 a. m. a radioactive material weighed 2 grams, but at 6: 00 p. m. it only weighed 0.45 grams. write an equation and find the hourly multiplier and percent of decrease. explain your answer.

! i'm struggling in my 8th-grade class and i need to know the answer!

the right system of equations to describe the situation would

be on the form:

x1 = 8000 + y1*t

and

x2 = 8000 + y2*t

where x1 and x2 represents the total money of imogene and her

friend respectively at the end of t years.

now for the value of amount earned, y1 and y2:

y1=8000*0.08

y2=2000*√(t-2)

linear pair postulates

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

a

step-by-step explanation: