the answer would be 11 out of 30 because there is 11 boys in total and the total of boys and girls is 30 so the answer is 11 out of 30
Answer:
Instructions are below.
Step-by-step explanation:
<u>To calculate the final amount if a given substance, we need to use the following formula:</u>
final amount= initial amount / (2^n)
n= elapsed time / half-life
For 20 years:
n= 20/10= 2
Final amount= 200/(2^2)
Final amount= 50 grams
For 60 years:
n= 60/10= 6
Final amount= 200/ (2^6)
Final amount= 3.125 grams
<u>To calculate the elapsed time it is more complicated:</u>
elapsed time= ln(ending amount/beginning amount) / (-decay constant)
ln= natural logarithm
decay constant= ln(2) / half-life
decay constant= 0.0693
elapsed time= ln(1.03/200) / (-0.0693)
elapsed time= 76.028
Prove:
n= 76.02/10= 7.602
Final amount= 200/(2^7.602)= 1.03 grams
Answer:
-2073.5
Step-by-step explanation:
We will have to solve this question using step by step procedure
So let's solve
(21/7+316)(5/2+4-13)
(21/7+316)
Lcm is 7
21+2212/7
2233/7
(5/2+4-13)
Lcm is 2.
5+8-26/2
13-26/2
-13/2
Back to the question
(2233/7)(-13/2)
-29029/14
-2073.5
Answer:
57
Step-by-step explanation:
x = 6
10x - 3
10(6) - 3
60 - 3
57
