Answer:
84.5
Step-by-step explanation:
Given :
Mean μ = 80
Standard deviation, σ = 5
Z = number of standard deviations from the mean, Z = 0.9
Teat score, x
Using the Zscore formula :
Zscore = (x - μ) / σ
Plugging in our values :
0.9 = (x - 80) / 5
Cross multiply
0.9 * 5 = x - 80
4.5 = x - 80
4.5 + 80 = x
x = 84.5
Test score = 84.5
I cant draw it perfectly so please dont judje if it not helpful
x<------------------------------------->infinity
So put a dot at the arrow pointing to X and then trace the line and the arrow to infinity dark.
We have to find LCM
3 | 45,75,63
3 | 15,25,21
5 | 5,25,7
5 | 1,5,7
7 | 1,1,7
LCM=3×3×5×5×7=1575
Slope: -3/4
y-intercept: (0,-5)
Graph the line using the slope and y-intercept, or two points.
