Answer:
the answer is 67 coins are not Nickels 
Step-by-step explanation:
29+24+16=67 so there is 27 Nickels in the jar
 
        
             
        
        
        
I'm guessing this is a parallelogram or something, so VR=TS and RS=VT
therefore, y=x+11 and x+2=y-3x
y=x+11 , 2=y-4x
y=x+11 , y=4x+2
then use the process of elimination:
   y=4x+2         then plug in:    y=3+11
-  y=x+11                                 y=14
   0=3x-9                     I think this is how you'd do it, tbh it's just an educated
  3x=9 , x=3                               guess. Btw, sorry if it looks weird
        
             
        
        
        
Answer:
D. A rotation 270º counterclockwise about the origin
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Reject H0 since test statistic <-2.492
Step-by-step explanation:
Given that the American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day.
n = 25
x bar = 69
s= 8.3
std error = s/sqrt n = 
H0:
Ha: 
(Left tailed test at 5% significance level)
a) Reject H0 if t -2.492
-2.492
b) Test statistic = mean difference/std error 
= 
=-3.01
df =24
c) Reject H0