The computer costs $304 now.
Step-by-step explanation:
Given,
Cost of computer = $400
First discount = 20%
Amount of discount = 20% of $400
Amount of discount = 
Amount of discount = $80
Price after first discount = 400-80 = $320
Additional discount = 5%
Amount of additional discount = 5% of price after first discount
Amount of additional discount = 
Amount of additional discount = $16
Final cost = 320-16 = $304
The computer costs $304 now.
Keywords: discount, subtraction
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-0.15 = -15/100 = -3/20
-7.75 = -7 3/4
-12.54 = -12 54/100 = -12 27/50
Let h = height
h square = 20 square + 5 square
h square = 400+ 25
So you square root both sides
h = root 425
h = 20.6155281
Answer:
volume of a triangular prism: use the equation V = ½ × length × width × height, or V = the area of the base × the height and that might work with many shapes. Find the area of the base: ½ × the length and width then locate the height, and multiply the height by the area of the base.
Step-by-step explanation:
hope this helps!