Step-by-step explanation:
14×5=70
8×8=64
(3/70) + (5/64)
= (3×64)+(5×70)
 ----‐------------------
 70×64
= (192+350)/448
=542/448
= 271/224
 
        
             
        
        
        
The probability is 0.8997.
We will use a z-score to answer this question.  z-scores are given by the formula

With our information, we have

Looking this up in a z-table (http://www.z-table.com) we see that the area to the left of this (everything less than, up to this value) is 0.8997.
 
        
        
        
Answer:
g(x) = - 3^x
Step-by-step explanation:
G is a reflection across the x axis of the function of f(x)
g(x) = −f(x)
g(x) = - 3^x
 
        
             
        
        
        
Answer:
2.8÷4
Step-by-step explanation:
if 2.8 is the 4th lap, you have to divide it by 4 to get the 1st lap.
 
        
             
        
        
        
Answer:
Option 3
Step-by-step explanation:
(f/g)(x) = f(x)/g(x)
Since g(x) is in the denominator, it can't be 0.
(Functions is undefined when the denominator = 0)
This fraction becomes undefined when:
-14x² - 1 = 0
14x² = -1
x² = -1/14
So x² should not be -1/14