It's A 15.6
I know it's late but i hope i helped :D
Answer:
x= -3 +√2 ≈ -0.1716, and x = - 3 -2√2 ≈ -5.8284
Step-by-step explanation:
y= -1/2(x+3)² +4
For x -intercept, y = 0.
0 = - 1/2(x+3)² + 4 /*(-2)
0 = (x+3)² - 8
(x+3)² = 8
√(x+3)² = +/-√8
x+3 = +/-√8
x = - 3+/- 2√2
x= -3 +√2 ≈ -0.1716, and x = - 3-2√2 ≈ -5.8284
Answer:
The percentage change is 85%
Step-by-step explanation:
To calculate percentage change
Percentage change = difference/original price × 100
Difference = £20 - £3 = £17
Price = £20
Percentage change = 17/20 × 100
= 17 × 5
= 85%
Answer:
Just add up the measurements of the sides and then double the result.
(2 + √5 + 6 + 3√5) · 2
= (8 + 4√5) · 2
= 16 + 8√5 (cm)