First you can turn the fractions into improper fractions.
5 3/4 = 23/4 6 3/4= 27/4
Add numerators, denominators stay the same.
23 + 27= 50
50/4
You can either leave it or simplify
Simplified:
50/4 = 12 1/2
:)
<span>Answer:
Q3 represents 75%, meaning a z of ~0.67
80 - 70 is 10, so the standard deviations is ~14.9.
10 / 0.67 = 14.9
now find the z that represents a score of 90
90 - 70 is 20
20 / 14.9 = 1.34
from a z-table, a z of 1.34 represents a probability of ~90.99% meaning that there is about a 9.01% chance of getting a 90 or better.</span>
Answer:
parenthesis PEMDAS
Step-by-step explanation:
"(x-4)" B. divide by -5 on both sides.
Answer: i.m on school com so i can,t see the pictures
Step-by-step explanation:
