Answer:
15.8 or 15 4/5
Step-by-step explanation:
Answer:
27.50
Step-by-step explanation:
109.99=100%
10.999=10%
21.998=20%
27.4975=25%
so they are taking £27.4975 off the original price meaning the new price is £82.4925 but, because it is money, you would need to round this to two decimal places leaving the new price as £82.49
Answer:
The answer is C.
Step-by-step explanation:
The slow cooling of intrusive igneous rock can cause large crystals to form. Crystals also form in metamorphic rock, but due the pressure, are often smaller.
Hope this helped!
Answer:
The correct answer is 10 for lowest average cost and the cost function is 0.2
+ 75x + 20.
Step-by-step explanation:
Average cost function is given by = 
= C(x) = 0.2x + 
+75.
For minimizing we need to find 
C(x) = 0.
⇒ C(x) = 0.2 - 
.
⇒ = 0.2
⇒ = 100.
⇒ x = ±10
⇒ x = 10 ; cost cannot be negative.
Second order derivative is positive which implies the average cost minimizes.
Original cost function is given by C(x) × x = 0.2 + 75x + 20.
I think C is a function since is passed the vertical line test.
