Answer:
first option
Step-by-step explanation:
Given
y = 2(x - 3)² + 1
Rearrange making x the subject
Subtract 1 from both sides
y - 1 = 2(x - 3)² ( divide both sides by 2 )
= (x - 3)² ( take the square root of both sides )
± = x - 3 ( add 3 to both sides )
± + 3 = x
Change y into terms of x with x being the inverse, that is
(x) = ±
+ 3
Answer:
width = 7 and length = 9
Step-by-step explanation:
Let's assume width = w, and length = 2 + w
So area of a rectangle = width * length
63 ft² = w (2 + w)
63 = 2w + w²
w² + 2w - 63 = 0
Use the quadratic formula to solve this
here, a = 1, b = 2 and c = -63
w = 7 or -9
The dimensions of a rectangle cannot be negative. So we take the dimension, w = 7.
Width = 7 and Length = 7+2 = 9
Answer:
Step-by-step explanation:
r = 9 cm
h = 10 cm
Volume of cone = (1/3)πr²h
= 847.8 cubic cm