Solve each equation. 9) -8(m – 4) – 7 = 89
1 answer:
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Answer:
a) z = -0.358
b) z = 0.358
Step-by-step explanation:
We are given a standard normal distribution.
a) We have to find the value of z such that the proportion of observations that are less than z in a standard normal distribution is 0.36.
That is,
This value will be calculated with the help of a standard normal table.
From standard normal table we have,
Thus, for z equal to -0.358 the proportion of observations that are less than z in a standard normal distribution is 0.36
b) We have to find the value of z such that 36% of all observations from a standard normal distribution are greater than z.
This value will be calculated with the help of a standard normal table.
Calculation the value from standard normal z table, we have,
Thus, 36% of all observations from a standard normal distribution are greater than z equal to 0.358
Given equation is
It can be written as follows.
Which is of the form
where a=3 and b=4.
We know that the coordinates of the vertices are (a,0) and (-a,0)
Substitute a=3, we get
The vertices are (3,0) and (-3,0).
We know that the coordinates of the foci are (c,0) and (-c,0)
Substitute a=3 and b=4, we get
Substitute c=5, we get
Hence the foci are (5,0) and (-5,0).
Answer:
Step-by-step explanation:
