Answer:
A≈527.79
Step-by-step explanation:
A=2πrh+2πr2=2·π·7·5+2·π·72≈527.78757
There are 16 girls and 20 boys.
4 + 5 = 9
36/4 = 9
4 x 4 = 16
4 x 5 = 20
<span>Edgar Allan Poe </span><span>was known as a master of suspense and horror, a respected literary critic, the inventor of the modern detective story, and the renowned poet</span>
Final answer: C
One hundred and twenty thousand
Answer:
See below.
Step-by-step explanation:
Given :-
x² + bx + c = 0 if x₁ + x₂ = -b and x₁x₂ = c
Solving :-
a) x₁ = 1/2 and x₂ = -3/4
=> x² + -(1/2 + -3/4)x + 1/2(-3/4)
=> x² + -(-1/4)x + (-3/8)
=> x² + 1/4x - 3/8
=> 8x² + 2x - 3 = 0
b) x₁ = 1 + √5 and x₂ = 1 - √5
=> x² + -(1 + √5 + 1 - √5)x + (1 + √5)(1 - √5)
=> x² - 2x + 1 - 5
=> x² - 2x - 4 = 0