The price before the discount was $81.00
Given;
Discounted price = $60.75
discount rate = 25%
Since the price is already discounted, it means that it is already 75% of the original price. So, we divided the discounted price by its corresponding percentage.
Original price - discount = discounted price
100% - 25% = 75%
$60.75 ÷ 75 % = $81.00
$81.00 * 25% = 20.25 discount
$81.00 - 20.25 = 60.75 discounted price
Answer:
-xz - 2x²- 2yz
Step-by-step explanation:
Multiply out (x-2y)z-2x(x+z)
(x - 2y)z - 2x( x + z)
Rearrange
z(x - 2y) - 2x(x + z)
Open bracket by multiplying by letters outside bracket
xz - 2yz - 2x² - 2xz
Collect like terms
xz -2xz - 2x² - 2yz
-xz - 2x² - 2yz
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Answer:
3.2
Step-by-step explanation:
x² + xy = 20
Take the derivative with respect to time:
2x dx/dt + x dy/dt + y dx/dt = 20
(2x + y) dx/dt + x dy/dt = 20
Given x = -5, y = 1, and dx/dt = -4:
(2(-5) + 1) (-4) + (-5) dy/dt = 20
(-10 + 1) (-4) − 5 dy/dt = 20
36 − 5 dy/dt = 20
5 dy/dt = 16
dy/dt = 3.2
Answer: The actual distance would be 63.375 feet.
Explanation: 9.75 x 6.5 = 63.375