Answer:
-40
Explanation:
Given
u = 2i - j; v= -5i + 4j and w = j
Required
4u(v-w)
4u = 4(2i) = 8i
v - w = -5i + 4j - j
v - w = -5i + 3j
Substitute
4u(v-w) 
= 8i(-5i+3j)
= -40(i*i) [since i*i = 1]
= -40
Hence the required solution is -40
 
        
             
        
        
        
The probability that all of the next ten customers who want this racket can get the version they want from current stock is 0.821
<h3>How to solve?</h3>
Given: currently has seven rackets of each version. 
Then the probability that the next ten customers get the racket they want is P(3≤X≤7) 
<h3>Why P(3≤X≤7)?</h3>
Note that If less than 3 customers want the oversize, then more than 7 want the midsize and someone's going to miss out.
 X ~ Binomial (n = 10, p = 0.6)
P(3≤X≤7)  = P(X≤7) - P(X≤2)
From Binomial Table:
                = 0.8333 - 0.012
                = 0.821 
To learn more about Probability visit : 
brainly.com/question/25870256
#SPJ4
 
 
        
             
        
        
        
Answer:
Solving the given formula for v2 gives us:

Step-by-step explanation:
Solving an equation for a particular variable means that the variable has to be isolated on one side of the equation.
Given equation is:

Multiplying both sides by t2-t1

Adding v1 to both sides of the equation

Hence,
Solving the given formula for v2 gives us:

 
        
             
        
        
        
-0.37 is negative thirtyseven-hundredths, so in a fraction that would be - 

. 37 is a prime number, so it isn't divisible by anything, meaning <span>
- 
 is in simplest form.</span>
 
        
        
        
7+3x=2x+2
Send constants to one side and others to one side
3x-2x=2-7
x=-5