Answer:
His actual score is 15
Step-by-step explanation:
Here, we are interested in calculating Wayne’s actual score on the ACT
when we say the scores have being standardized, it means the score was reported in terms of the z-score and not the initial raw scores.
Now, mathematically, for the scores to have a negative z-score, it means it is actually below the mean.
The formula for the z-score or standard score is given below;
z-score = (x - mean)/SD
where in this case, x = ? which is the score we are looking for , z-score = -0.5 , mean score = 18 and standard deviation of the scores = 6
So, substituting these values into the z-score equation, we have;
-0.5 = (x-18)/6
x-18 = 6(-0.5)
x -18 = -3
x = -3 + 18
x = 15
The answer is 2/3 in lowest terms.
Answer:
Option (a)
Step-by-step explanation:
Slope of a line passing through two points
and
is given by,
Slope (m) = 
Slope of the line passing through (-4, 3) and (6, 3) will be,
m = 
m = 0
In other words, slope of any line parallel to x-axis is zero.
Therefore, Option (a) is the answer.
Answer:
A.) nine more girls read 6 or more than boys who read 6 or more books
Step-by-step explanation:
Let's examine the statements ...
a) 24 is 9 more than 15 . . . TRUE
b) 41 is 6 more than 36 . . . false
c) 32 is twice as many as 15 . . . false
d) 24 is twice as many as 48 . . . false
Answer:
-16
Step-by-step explanation:
y = mx
-4 = 1/4x
Divide both sides by 1/4.
-16 = x