An element with mass 670 grams decays by 27.3% per minute. how much of the element is remaining after 9 minutes, to the nearest 10th of a gram?

38.0 grams

Step-by-step explanation:

The exponential decay equation with rate of decay r in time period x is given by :-

, A is the initial value .

Given: The initial mass of element=  670 grams

Rate of decay= 27.3%=0.273

Now, the function represents amount of element after x minutes is given by ;-

Now, the function represents the amount of element after 9 minutes is given by ;-

Hence, 38.0 grams of element remains after 9 minutes.

pooopoopopoopop

step-by-step explanati∵∵∴∴on:

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer