Answer:
Step-by-step explanation:
-2 1/3 2 5/9 2.43 2.43
It is the 1st equation at the top.
Reason: First check the equations to check that the initial amount is 497 kg. You can do this by setting x = 0 into all of the equations. The 3rd and 4th equations evaluate to 2 when x = 0 and so you can eliminate the bottom 2 equations immediately. Equation # 2 does not work since the half-life value of 1.040 kg is way to small (significantly smaller than half of 497 kg).
You can check that equation # 1 is the right one, by setting x = 0 and getting
y = 497*(1/2)^[(1/38) * 0] = 497
so the initial amount is 497
Also check that there is 1/2 the amount at time 38 (since the half-life is 38 days)
y = 497 * (1/2)^[(1/38) * 38] = 248.5
248.5 kg is half of 497 and so this checks out for equation # 1.
Since we know equation # 1 is good, now we evaluate at x = 4 to get
y = 497 * (1/2)^[(1/38) * 4] = 462.029
so our answer to the thousandth places is 462.029 kg.
Answer:
Step-by-step explanation:
<em>a</em> - side of square
The formula of a perimeter of a square:
We have P = 48. Substitute:
<em>divide both sides by 4</em>
You can use the Pythagorean theorem, and calculate the length of a diagonal or use the formula of a diagonal of a square:
Substitute:
You need to get rid of 3y
When you subtract 3y - (-3y) it would be 6y, so it would be false.
In order to do that, you need to add
Solution: C
which of the following isthe√×51? answer is A .0-1
