Answer:
by multiplying any non-zero scalar number except 1 to given vector
Step-by-step explanation:
Scalar multiple of one vector is parallel to the vector.
So in given case, v1= (-3,2) and a vector, v2 parallel to it can be find by multiplying any non-zero scalar number except 1 to v1
i.e
v2= n*v1
n is any scalar non-zero number except 1
let n=2 (one of many possible options)
v2= 2*(-3,2)
=(-6,4) !
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Mean (m) = 72
Standard deviation (sd) = 10
Grading cutoff policy:
bottom 5% receive F
next 15% receive D
next 35% receive C
next 30% receive B
A) Give the cutoffs for the grades in this course in terms of standardized scores.
Standardized score for grade cutoff:
Locating the Zscore for the proportions on the z table :
Bottom 5% = 0.05 ; corresponding Zscore = - 1.645
next 15% receive D = (5 +15)% 0.20 ; corresponding Zscore = - 0.84
next 35% receive C = (20+35)% = 0.55 ; corresponding Zscore = 0.13
next 30% receive B = (55 + 30)% = 0.85 ; Corresponding Zscore = 1.04
B) Give the cutoffs in terms of actual total scores.
Recall:
Zscore = (x - m) /sd ; where x = actual score
x = sd*z + m
For F:
10*(-1.645) + 72 = 55.55
For D:
10*(-0.84) + 72 = 63.6
For C:
10*(0.13) + 72 = 73.3
For B:
10*(1.04) + 72 = 82.4
C) Do you think that this method of assigning grades is a good one?
Yes, it is good in terms of expressing scores around the mean such that score below are negative and those above are positive. However, it is a little bit ambiguous.
Answer:
Step-by-step explanation:
Given
The radius of the circle is
The area of the circle is given by
Insert the value of radius and get the area to play
Thus, the area to play is
Answer:
2 2/5 per day I’m pretty sure ( 3 1/8 / 7 1/2)
Step-by-step explanation: