2. Which of the following numbers is not greater than -7.4
1 answer:
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Answer:
Rate of change = -1
Step-by-step explanation:
Given:
f(x) = -½(x + 2)² + 5
Required:
Average rate of change from x = -3 to x = 1
Solution:
Rate of change =
Where,
a = -3,
f(a) = f(-3) = -½(-3 + 2)² + 5 = -½(-1)² + 5 = 4.5
b = 1,
f(b) = f(1) = -½(1 + 2)² + 5 = -½(9) + 5 = 0.5
Plug in the values into the formula:
Rate of change =
Rate of change =
Rate of change = -1
<h2>Answer:</h2><h2>Option (i), (iv) and (v) are correct</h2>
Step-by-step explanation:
Cylinder volume = 703 , height = 18.5 cm
(i) Volume or area of the cylinder =
The formula for the volume of a cyclinder can be applied to find the area of the base.
Option (i) is correct
(ii) Volume or area of the cylinder =
The volume should be divivded by height to get the area
Option (ii) is wrong
(iv) Area of the base = = 38
Option (iv) is correct
(iii) The radius of the cyclinder is half the height.
= 19 cm not 18.5 cm
Option (iii) is wrong
(v)Area of the base = = 38
Option (v) is correct