Step-by-step explanation:
7x+22=2(5x+2)
7x+22=10x+4 (-7x)
3x+4=22 (-4)
3X=18 (divide by 3)
X=6 pencils 
check if the number is correct
asha= 7*6=42 42+22 is 64
Lucy= 5*6=30 30+2 is 3264/32 is 2
asha= 7*6=42 42+22 is 64Lucy= 5*6=30 30+2 is 3264/32 is 2there fore asha sells twice as many as Lucy
 
        
             
        
        
        
Answer:
-8y-67
Step-by-step explanation:
-7(y+9)-(y+4) distribute 
-7y-63-y-4 combine like terms
-8y-67
i believe this is the right answer :D
 
        
             
        
        
        
you are correct, it is one to two
        
             
        
        
        
Answer:
I believe that you multiply 5 x 10 because you multiply any of the terms by 5. 
Step-by-step explanation:
Like another example is the 41st term which is 5 × 41 = 205
 
        
                    
             
        
        
        
Answer:
P(X < 80) = 0.89435.
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean  and standard deviation
 and standard deviation  , the zscore of a measure X is given by:
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question, we have that:

P(X < 80)
This is the pvalue of Z when X = 80. So



 has a pvalue of 0.89435.
 has a pvalue of 0.89435.
So
P(X < 80) = 0.89435.