Answer:
Step-by-step explanation:
Given that the  time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.
P(completing exam before 1 hour)
= P(less than an hour) = P(X<60)
=P(Z< )
)
=0.5-0.34=0.16
i.e. 16% of students completed the standardized exam.
 
        
             
        
        
        
 the fiest answer is x=6 for the second one the answer is x=4
Step-by-step explanation:
x+15/5x+1 =15/35 then cross multiply
1st one 
 
        
                    
             
        
        
        
<h2>
The bond will be worth in total after 10 years is =$1,950</h2>
Step-by-step explanation:
Given,
 Nora invested $1,500 in at a bond simple interest rate of 3%
here P= $1500 R= 3% and t = 10year
Simple interest(I) = 
                            =$ 
                            =$ 450
<h3>
The bond will be worth in total after 10 years is = $1,500+ $450</h3><h3>
                                                                                      =$1,950</h3>
 
        
        
        
Answer:
600 and 200 
Step-by-step explanation:
kofi  : kweku     is   3 :1 
    so Kofi gets   3 out of ( 3 +1)  = 3/4 of 800  = 3/4 * 800 = 600
          kweku get s the rest   800- 600 = 200   
 
        
             
        
        
        
Is this 13 and 34 ? or 1,3,3,4?