Answer:
52
Step-by-step explanation:
(7x-2) and (20-3x)/4
when x = 4
{7(4) - 2} × {20 - 3(4)}÷4
(28 - 2)×(20 - 12)÷4
26×8÷4
208÷4
52
i. Line BD = 6√2 cm
ii. Perimeter = 3 (π + 4) cm
iii. Area = 18 ( π - 2) cm
<h3>How to determine the parameters</h3>
Let the length of BD = x
Since B is the midpoint of the arc AC, then ∠BOC = 15°
In ΔBDB
Let's use the trigonometric ration, tan
CD = x
Then, using the Pythagorean theorem
Thus, line BD is cm
ii. Perimeter = BC + BD + CD
= 2πr/8 + x + r - x
= π(12)/4 + r
= 3π + 12
= 3 ( π + 4) cm
iii. Area of shaded area = Area of BOC + Area of BOD
⇒ πr^2/8 × 1/2x^2
= π144/8 × 1/2(72)
= 18π - 36
= 18 ( π - 2) cm²
Learn more about quadrant of a circle here:
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Sine is an odd function, and cosine is an even function. You may not have come across these adjectives “odd” and “even” when applied to functions, but it's important to know them. A function f is said to be an odd function if for any number x, f(–x) = –f(x). A function f is said to be an even function if for any number x, f(–x) = f(x). Most functions are neither odd nor even functions, but some of the most important functions are one or the other.
The answer is false.
Answer: your mom
Step-by-step explanation: