Answer:
74.72
Step-by-step explanation:
Given
mean
Standard deviation 
For Top 25%

and Z value for 75 % is 0.6744
Thus score which separates the Top 25% of students is


Answer:
if you divide both sides of -5x > 0 you get z > <em>0. </em>This is incorrect because if you choose a value from the possible solutions such as z=6 and substitute it into the original equation you get <em>-30</em> > 0, which is <em>not true</em>
I put the answers in bold
hope this helps!
Step-by-step explanation:
Answer:
Step-by-step explanation:
B= -20+45/56
B=-20.80
28:35
Those are divisible by 7 so divide both sides by seven
the answer is 4:5
Caterer two charges 550 for hall rental plus $40 per person