Answer:
4 stations
Step-by-step explanation:
If we need to be at least 98% certain that an enemy plane flying over will be detected by at least one station, we must ensure that there is at most a 2% chance that no radar stations detect the plane.
The probability that a single radar station does not detect the plane is 0.35.
For n radar stations:
Rounding up to the next whole station, at least 4 stations are needed.
Answer:
After 80 years 432 pounds of radioactive element will be remaining.
Step-by-step explanation:
A function 
models the amount of a radioactive material.
Here x = number of years taken for decay.
If 
pound and 
pound, then we have to calculate the time for decay.
Take log on both the sides of the equation
-0.0077x = ln(0.54)
-0.0077x = -0.616186
x = 
x = 80.02 years
Therefore, After 80 years 432 pounds of radioactive element will be remaining.
Answer:
89.10
Step-by-step explanation:
To find the volume (how much soil can fit) you do Length x Width x Height in this case it is 4 x 9 x 3
4 x 9 x 3 = 108
Now you have to divide the volume by two because you only want to fill half the box.
108/2=54
Now you multiple the volume by the price to figure out how much soil will cost
54 x 1.65 = 89.1
It will cost $89.10
Answer:
ok first we add 9 and 29 together
38
now we add 90
128
so the other angle is
52
so we just use the formulas
and
Side a = 26.56371
Side b = 43.14662
Side c = 34
so the side with a x on it is 26.6
so know we have to do the same thing but not including the top part
ok so the side with x on it is 18.8
so 26.6-18.8=7.8
x=7.8
*WARNING* This shoud be close to the answer but may to up to a couple dp higher or lower sorry i just don't have time to be more accurate
Hope This Helps!!!
