Answer:
Step-by-step explanation:
square of 15 + square of x = square of 21
225 + square of x = 441
441 - 225 = 216
x = 216
The equation which models the distance (d) of the weight from its equilibrium after time (t) is equal to d = -9cos(2π/3)t.
<h3>What is the period of a cosine function?</h3>
The period of a cosine function simply means the total length (distance) of the interval of values on the x-axis over which a graph lies and it's repeated.
Since the weight attached is at its lowest point at time (t = 0), therefore, the amplitude of equation will be negative nine (-9)
For the angular velocity at time period (t = 3s), we have:
ω = 2π/T
ω = 2π/3
Mathematically, the standard equation of a cosine function is given by:
y = Acos(ω)t
Substituting the given parameters into the formula, we have;
d = -9cos(2π/3)t.
Read more on cosine function here: brainly.com/question/4599903
Answer:
isosceles: 2 angles are the same and 2 sides are the same. Equilateral have all the same sides and angles. Saclene have all dfferent angles and sides.
11) isosceles
12) equilateral
13) isosceles or scalene unclear
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Answer:
А(0/6;-2) и B(-5.6;17)
Step-by-step explanation:
(-2;4) поставь координаты место (x;y)
Например: 4=-3*(-2)+b, найдите b, а затем нарисуйте график.
Я отправила вам фото. Там всё написано и график тоже
If the bikes original price was $112.99...
and it's 75% off you have to multiply the original price by the percentage thats left which is 25%...
$112.99×.25%=28.25
ANSWER: b)28.25
