Answer: p - 0.2p
Step-by-step explanation:
Given the following :
Original Price of tennis racket = p
Mark down or discount on original price = 20% of original price = (20/100) × p = 0.2p
Amount after discount = Amount paid by Natasha
Amount after discount = Original price - Discount 
Amount after discount = p - 0.2p
Amount paid by Natasha = p - 0.2p
 
        
             
        
        
        
1) given x^4 + 95x^2 - 500
2) split in two factors with common factor term x^2: (x^2 + )(x^2 - )
3) find two numbers that add up 95 and their product is - 500:
=> 100*(-5) = - 500 and 100 - 5 = 95
=> (x^2 + 100)(x^2 - 5)
4) factor x^2 - 5 = (x + √5) (x - √5)
5) write the prime factors: (x^2 + 100) (x + √5) (x -√5)
6) find the solutions:
x^2 + 100 = 0 => not possible
x + √5 = 0 => x = - √5
x - √5 = 0 => x = √5
Answer: x = √5 and x = - √5
        
             
        
        
        
Answer:
Stan has 13 pencils.
Step-by-step explanation:
s+5=18
   -5 -5
    s=13
Hope this helps! ;)
<em>(plz mark me as brainliest?)</em>
<em>(u don't have to)</em>
 
        
             
        
        
        
First of all there are multiple formula's to get the volume of a trapezoidal prism:
V=(1/2 * (base1 + base2) * h) * height prism
Using the numbers you gave: 
base1 = 7     base2 = 5     h = 4     height prism = 8
Putting this into the equation:  V=(1/2 * (7 <span>+ 5) * 4) * 8
V= (1/2 * 12 * 4) * 8
V = 24 * 8
V = 192
The volume of the gift box is 191 inches squared.</span>
        
             
        
        
        
Answer: 169.52
Step-by-step explanation
%increase which is 5% =100 x final - initial
                                                    ---------------------
                                                          initial 
the initial is $169.52 
 and the final  $178