Answer:

Step-by-step explanation:
The magnitude of 3D vector  can be given by the following:
 can be given by the following:

Plugging in given values, we have:
 .
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Answer:
135 units²
Step-by-step explanation:
The area (A) of a parallelogram is calculated as
A = bh ( b is the base and h the perpendicular height )
To calculate h use Pythagoras' identity on the right triangle on the left
h² + 8² = 17²
h² + 64 = 289 ( subtract 64 from both sides )
h² = 225 ( take the square root of both sides )
h =  = 15 , thus
 = 15 , thus
A = 9 × 15 = 135 units²
 
        
             
        
        
        
Step-by-step explanation:
(2+3)(2-3)
=5×(-1)
= -5
good morning 
have a great day 
 
        
                    
             
        
        
        
Answer:
1. 2x + 3y =22
y=4
C. (5,4)
2. y=0
-5x - 2y = -15
B. (3,0)
Step-by-step explanation:
2x+(3)(4)=22
Step 1: Simplify both sides of the equation.
2x+12=22
Step 2: Subtract 12 from both sides.
2x+12−12=22−12
2x=10
Step 3: Divide both sides by 2.
2x/2 = 10/2
x=5
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−5x−(2)(0)=−15
Step 1: Simplify both sides of the equation.
−5x−(2)(0)=−15
−5x+0=−15
(−5x)+(0)=−15(Combine Like Terms)
−5x=−15
−5x=−15
Step 2: Divide both sides by -5.
−5x/−5 = −15/−5
x=3
 
        
             
        
        
        
Answer=48
30%=0.30
$8.00*0.30=$2.40
Dingane has $2.40 worth of 5-cent coins
$2.40/0.05=48
He has 48 5-cent coins