Answer:
B
Step-by-step explanation:
Answer:
z = 2.6
Step-by-step explanation:
<u>Use the formula for z-score</u>

This tells us that this person's score of 210 places them 2.6 standard deviations above the mean
Question 29 is A 2 and 30 is C 3
1280. 100% of students
X. 60% of student voting for Joan
X=1280•60/100
X=768
Answer:
Step-by-step explanation:
you need to find the distance between points L, M, N to know the length of sides LM, MN, NL
use the distance formula
d= √(x2-x1)² +(y2-y1)², where the points are (x1, y1) and (x2, y2)
LM = √(4-1)² + (-3- -3)² = √3² + 0² = 3
MN = √(1-1)² + (-3-0)² = √0² + 9 = 3
NL = √(4-1)² + (-3-0)² = √3² + 9 = √18 = 3√2
The perimeter is LM+MN+NL = 3+3+3√2 = 6+3√2 ≈ 10.243