Answer:
18
Step-by-step explanation:
I believe that a rectangular prism since (hence the name) it's made up of rectangles, only with 2 squares helping to close it up.
<span><span>a8a6)1/7/a2</span> </span>Final result :<span> a12
———
7
</span>Step by step solution :<span>Step 1 :</span> 1
Simplify —
7
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<span>Equation at the end of step 1 :</span><span> 1
((a8) • (a6)) • — ÷ a2
7
</span><span>Step 2 :</span><span> 1
Divide — by a2
7
</span><span>Equation at the end of step 2 :</span><span><span> 1
((a8) • (a6)) • ———
7a2
</span><span> Step 3 :</span></span>Dividing exponential expressions :
<span> 3.1 </span> <span> a14</span> divided by <span>a2 = a(14 - 2) = a12</span>
Final result :<span> a12
———
7
</span><span>
</span>
Probability of survival of one disk, p=1-0.05=0.95
If there are n drives, and failures are independent (e.g. mechanical wear and tear, and not a lightning strike or a current spike), then
Probability of survival = p^n
(a) for two disks, P(2) = 0.95^2=0.9025
(b)for three disks P(3) = 0.95^3 = 0.8574
The discriminant is b^2-4ac
In this equation 9=a, 12=b, 4=c
Plugging into the formula
12^2-4(9)(4)=
144-324 =
-180 is the discriminant
Since the discriminant is a negative number there are no real roots
