Answer:
Step-by-step explanation:
a). Mean of the given data set = 
= 28
b). x 
32 32-28 = 4 16
28 28 - 28 = 0 0
18 18 - 28 = -10 100
40 40 - 28 = 12 144
22 22 - 28 = -6 36
= 296
c). Standard deviation = 
= 
= 7.69
d). Mean of the new set of weights = 
= 34
Since mean of the data set is more close to each data, standard deviation will be less than the deviation given in part (c).
Answer:
y = K/(2z)
Step-by-step explanation:
Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other. Divide 2z from both sides:
(K)/2z = (2yz)/2z
y = K/(2z)
y = K/(2z) is your answer.
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Answer:
multiply opposite side and the answer is ready now because check your soulation
Hi Joseph2337
x/2 - 5 > - 7
x/2 > -7 + 5
x/2 > -2
x > -2 * 2
Lastly multiply 2 * 2 so it can be 4.
Answer: x > -4
Answer:
Step-by-step explanation:
We have been given that a polynomial function 
models the motion of a roller coaster. Every root of the polynomial represent when the roller coaster is at the ground level.
In order to find all the potential values of x when roller coaster is at the ground level, we find the zeroes of the polynomial by factoring it as shown below:
The zeroes of this polynomial occur when either or 
.
The equation have no real solutions. Therefore, the only time when the roller coaster is at the ground is at
