A radioactive material is an element that is highly unstable due to its high neutron-to-proton ratio. Because of this, they spontaneously undergo nuclear reaction under nuclear fission releasing subparticles. The time it took to consume half of the original amount of the radioactive material is called the half-life.
The equation is <span>a2=ae^(−9.753t), where a2 is the concentration after time t and a is the original concentration. The ratio of a2/a should be 0.5/1 or 1/2. Therefore,
a2/a = e^(-9.753t)
0.5 = e^(-9.753t)
ln(0.5) = lne^(-9.753t)
ln(0.5) = -9.753t
t = 0.071 days or 1.7 hours.
</span>
Answer:
No, it is not tangent
Step-by-step explanation:
XY can only be tangent to the circle if it forms a right angle to the diameter. To test this, you need to figure out whether the three parts of the triangle make a Pythagorean triple. 8.5×2=17, and 17^2+5^2 is 314, which is not equal to 20 squared. Therefore, it is not tangent. Hope this helps!
Nolur acil lütfen yalvarırım
Answer: y=6x+30
Step-by-step explanation:
Answer:
<u>Answer</u><u> </u><u>→</u><u> </u><u>Student</u><u> </u><u>A</u><u> </u><u>was</u><u> </u><u>right</u><u>.</u>
![{ \tt{ \sqrt[3]{1944} = \sqrt[3]{(72 \times 27)} }} \\ \\ = { \tt{ \sqrt[3]{72} \times \sqrt[3]{27} }} \\ \\ = { \tt{ \sqrt[3]{72} \times 3}} \\ \\ = { \underline{ \tt{ \: 3 \sqrt[3]{72} } \: }}](https://tex.z-dn.net/?f=%7B%20%5Ctt%7B%20%5Csqrt%5B3%5D%7B1944%7D%20%20%3D%20%20%5Csqrt%5B3%5D%7B%2872%20%5Ctimes%2027%29%7D%20%7D%7D%20%5C%5C%20%20%5C%5C%20%20%3D%20%7B%20%5Ctt%7B%20%5Csqrt%5B3%5D%7B72%7D%20%5Ctimes%20%20%5Csqrt%5B3%5D%7B27%7D%20%20%7D%7D%20%5C%5C%20%20%5C%5C%20%20%3D%20%7B%20%5Ctt%7B%20%5Csqrt%5B3%5D%7B72%7D%20%20%5Ctimes%203%7D%7D%20%5C%5C%20%20%5C%5C%20%20%3D%20%7B%20%5Cunderline%7B%20%5Ctt%7B%20%5C%3A%203%20%5Csqrt%5B3%5D%7B72%7D%20%7D%20%5C%3A%20%7D%7D)
