Answer:
the question is incomplete, so I looked for a similar one:
<em>After the release of radioactive material into the atmosphere from a nuclear power plant, the hay was contaminated by iodine 131 ( half-life, 8 days). If it is all right to feed the hay to cows when 10% of the iodine 131 remains, how long did the farmers need to wait to use this hay? </em>
iodine's half life (we are given x, we need to find b):
0.5A₀ = A₀eᵇˣ
x = 8 days
we eliminate A₀ from both sides
0.5 = eᵇ⁸
ln 0.5 = ln eᵇ⁸
-0.69315 = b8
b = -0.69315 / 8 = -0.08664
since the farmers need to wait until only 10% of the iodine remains (we already calculated b, now we need to find x):
0.1A₀ = A₀eᵇˣ
0.1 = eᵇˣ
ln 0.1 = bx
where b = -0.08664
x = ln 0.1 / -0.08664 = -2.302585 / -0.08664 = 26.58 days
13/52= 1/4 or .25
If you have a scientific calculator it really helps with simplifying numbers to the lowest term.
<h3>PLEASE FIND THE ATTACHED PHOTOGRAPH FOR THE FIGURE.</h3><h2><u>SOLUTION:</u></h2>
- Given, BD bisects Angle ABC.
- So, Angle ABD = Angle CBD
- Measure of Angle ABD = 9x-7
- Measure of Angle CBD = 6x+2
- Therefore,
Angle ABD = Angle CBD
or, 9x-7 = 6x+2
or, 9x-6x = 2+7
or, 3x = 9
or, x = 9 ÷ 3
or, x = 3
- So, x = 3
- Measure of Angle ABC
= Measure of Angle ABD + Measure of Angle CBD
= [(9x-7)+(6x+2)]°
= [(9×3-7)+(6×3+2)]°
= [27-7+18+2]°
= 40°
<h2><u>ANSWER</u><u>:</u></h2>
x = 3
Measure of Angle ABC = 40°.
Hope it helps you.
Answer:
10 visits tops
Step-by-step explanation:
50- 19.95= 30.05
30.05/2.75= 10.9 which means 10 times.
-7 ≤ x + 5 < 12
You really only need one of them i.e. x + 5 < 12
0 ≤ x + 12 < 19
0 ≤ x < 7
I realllllyy hope that is right for my own sake. Please let me know if i'm wrong and if so how I can do it right