Front yard
65+65+45+45=220
Back yard
45+45+35+35=160
220+160=380
380 feet
All u do is add up until u get ur answer
Note: a radioactive decay constant is always negative.
time = [natural log(ending amount / beginning amount)] / k
time = ln (20 / 24) / -.00011
time = ln (5/6) / -.00011
time = -.018232155683 / -.00011
time =
<span>
<span>
<span>
165.7468698455
</span>
</span>
</span>
time =
<span>
<span>
<span>
165.75 years
</span></span></span>
3x-12+5-x=2x-7
2x-7 =2x-7
Means there are infinite solutions.
Answer:First make sure your calculator is on the right setting which would be a DEG. Then depending on the problem you would press COS, put whats needed inside the parentheses and close it.
Or if a different kind of problem you would press 2nd on the top of the calculator then Cos and continue the same way as the first one.
Step-by-step explanation: