Stewart

A radioactive isotope(h=4.5days) was prepared. This isotope was used 14 days later when it had an activity of 6000000 Bq. What was the activity of this isotope when initially prepared?

14 years ago

solve 3.7^4*x = 9271

13 years ago

Find the equation of a line tangent to te curve xy = sqrt(xy - x) + 1 at the point (1, 2).

13 years ago

Tamin bought a ticket in a raffle in which 500 tickets were sold. If there are 5 prizes, what is the probability that Tamin does not win a prize?

8 years ago

The answer on my handout is 5.18 x 10^7

14 years ago

After integrating and solving, I got approximately 4.711393061. Does this seem right?

13 years ago

Great answer Reiny but line 8 is the wrong way round and should read P=2*L 10x+y-1=2(10y+x-1) but it doesn't change the answer

11 years ago

Ionic bond Na+ + Cl- ----> NaCl this is also known as table salt :)

9 years ago

3.6mol Cl₂ x 2mol NaCl x 58.44g NaCl = 420.78

9 years ago

Minimize: c= 3.25(2w+l)+5.45(l) Constraint: A=lw=600

9 years ago

sin(A) = 1/csc(A) its the same thing so its always equal

9 years ago

5ft*7ft=35sqft

9 years ago

If none of the output values are repeated, the relation is a function. If none of the input values are repeated, the relation is a function.

5 years ago

Jd = nc2 x = mc2 ro =s2

4 years ago

It’s ok I just finished the ninth for him

4 years ago