Step-by-step explanation:
1hr 60 minutes = 2.5hours ÷15minutes =0.16×60=9.6 which they will be allowed to do the game time
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
Answer:
189.27 ft²
Step-by-step explanation:
Find the area of the rectangle, then the semi-circle, then add the sums.
<u>1.) Rectangle ▭</u>
║A = lw
║A = 10 ⋅ 15
║A = 150
<u>2.) Semi-circle◗</u>
║A = (πr²)
║A = (π ⋅ 5²)
║A = (78.54)
║A = 39.27
<u>3.) Adding sums +</u>
║150 + 39.27 = 189.27
[Your answer should be 189.27 ft²]
Answer:
Step-by-step explanation:
Hello:
an equation for the line is : y =mx +b (m: is a slope )
given : m = -1
the equation is : y = -x+b
through the point (-2,-3) :-3 =-(-2)+b....... b=-5
the equation is : y = -x-5