26 words per min.
78 divided by 3 to get Megan's rate.
Megan= 26x
Chloe= 78x
(i don't know if i'm right so sorry if u get the answer wrong bc of me)
Answer:
39 degrees
Step-by-step explanation:
Right triangle
40 ft tree = opposite side
50 feet = adjacent side
tan (angle) = opp / adj = 40 /50
arctan (40/50) = 38.66 degrees ~ 39 degrees
Answer:
4
Step-by-step explanation:
(4 * 2) - 4 = x
8 - 4 = x
x = 4
Answer:
Step-by-step explanation:
let it's breadth be x
area of rectabgle=l*b
259=18.5*b
259/18.5=b
14=b
perimeter of rectangle=2(l+b)
=2(18.5+14)
=2*32.5
=65 cm
Hello there! A half-life is basically a decay of 50%. We will find the amount left after one day by exponential decay. The formula for exponential decay is A(1 - r)^t, where A = initial amount, r = rate (in decimal form), and t = time (or in this case, amount of half lives). The half-life is 6 hours and 24 goes into 6 four times. That's 4 half lives. Let's start by subtract 50% (0.5) from 1. 1 - 0.5 is 0.5. Now, we will use 0.5 and raise it to the 4th power, because the 4th power represents 4 half lives. 0.5^4 is 0.0625. Leave this number on the calculator. Do not round. Multiply that number by 448 to find the amount left. When you do, you get 28. There. 28 grams will be left after 24 hours.
