Answer:
72.5
122
Step-by-step explanation:
Half-life for McGill-23 is 145 years. What is the k value?
half of 145 = 72.5
145 - 23 = 122
Hope I did the right thing
Hope this helps ❤️
Answer:
9(p + 4)
Step-by-step explanation:
One of the unknown variable is p.
First of all, we know that the number is 9 times as big (multiplication) as the new number obtained through the addition of four to p i.e (p + 4).
Translating the word problem into an algebraic expression, we have;
9 * (p + 4) = 9(p + 4)
Simplifying further, we have;
9p + 36
15 minutes because the one that will finish faster will do it
The percentage of change: This is how you set it up
% change = (New old value) =
(Old value) = x 100 %
40 is the old value and 72 is is the new value
The new value is greater than the old value.
(72 - 40) /40)x 100 = 80 or 80%
the percent change from 40 to 72 represents a positive change (increases) of 80.
They sold a total of 90 boxes
Natalie sold 1/3 of this......1/3 * 90 = 90/3 = 30....so Natalie sold 30.
that leaves (90 - 30) = 60.....Ellie sold 60
ratio of Natalie to Ellie is : 30/60 which reduces to 1/2.
so the ratio is : 1/2 or 1:2 or 1 to 2 <==
