Answer:
Step-by-step explanation:
We know that when X is normal
X-mu/sigma is std normal
Here the scores X is normal with mean =140 and sd =40
a) X=172
gives Z = 32/40 = 0.80
P(Z<0.8) = 0.5+0.2881
=0.7881
Hence 79th percentile
b) X =200 then x-mu = 60
So z=60/40 = 1.5
c) 100<x<160 means
1.5<z<0.5
d) X>190 means Z>1.25 hence proportion = P(Z>1.25) =0.5-0.3944
=0.1056
e) For 67th percentile z value = 0.0675
Hence x score = 140+0.0675(40) = 142.7
B -7,0 when we talk about the x intercept we talk about where the line touches the x axis which would be the horizontal line , in this graph we saw the graphed line touches the x axis on -7 therefore , the x intercept is -7,0
The graph adequately represents the following case
"The number of employees at a store increased at a constant rate for 5 years. There was a decrease in the number of employees for 2 years. Then the number of employees increased at a greater constant rate for the next few years."
Step-by-step explanation:
To solve the above-mentioned problems we need to filter the results through analysing the options given-
We have to keep in mind that-
- For an increase in value/quantity- the graph would be on an upswing
- For decrease in value/quantity- The graph would be in declining mode
- For constant value- horizontal graph line parallel to the x-axis
Now going through the options-
option 1:-
David drove at a constant speed initially- throughout the graph no horizontal line is present, hence this condition does not represent the graph.
option 2:-
test scores increased and then decline- In this condition only two phases are mentioned, whereas in the graph three different phases are present. Hence this condition too does not represent the graph.
option 3:-
After the period of slow.- The graph starts with an upswing. hence this condition too does not represent the graph.
option 4:-
Employees increased and then declined and then again increased. All the above condition corroborates to the above-mentioned graph. hence this condition is represented in the graph
Answer:
5v
Step-by-step explanation:
First you convert all the subtraction to addition: 2v+8v+(-5v)
Then you combine like terms: 2v+3v:
5v
Answer:
well explict means stated clearly and in detail, leaving no room for confusion or doubt. and implict means implied though not plainly expressed.
Step-by-step explanation:
