Answer: it’s C
Step-by-step explanation:
The number 390.0826 in an expanded form is 300 + 90 + 8/100 + 2/1000 + 6/10000
<h3>How to write the number in an expanded form?</h3>
The number is given as:
390.0826
Next, we split the numbers:
This is done as follows:
390.0826 = 300 + 90 + 0.08 + 0.002 + 0.0006
Express the decimals as fractions
390.0826 = 300 + 90 + 8/100 + 2/1000 + 6/10000
Hence, the number 390.0826 in an expanded form is 300 + 90 + 8/100 + 2/1000 + 6/10000
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Answer:
This will help i am telling you if it don't ask me for the answer
Step-by-step explanation:
Answer:
1 and 1/8
Step-by-step explanation:
Answer:
The second time when Luiza reaches a height of 1.2 m = 2 08 s
Step-by-step explanation:
Complete Question
Luiza is jumping on a trampoline. Ht models her distance above the ground (in m) t seconds after she starts jumping. Here, the angle is entered in radians.
H(t) = -0.6 cos (2pi/2.5)t + 1.5.
What is the second time when Luiza reaches a height of 1.2 m? Round your final answer to the nearest hundredth of a second.
Solution
Luiza is jumping on trampolines and her height above the levelled ground at any time, t, is given as
H(t) = -0.6cos(2π/2.5)t + 1.5
What is t when H = 1.2 m
1.2 = -0.6cos(2π/2.5)t + 1.5
0.6cos(2π/2.5)t = 1.2 - 1.5 = -0.3
Cos (2π/2.5)t = (0.3/0.6) = 0.5
Note that in radians,
Cos (π/3) = 0.5
This is the first time, the second time that cos θ = 0.5 is in the fourth quadrant,
Cos (5π/3) = 0.5
So,
Cos (2π/2.5)t = Cos (5π/3)
(2π/2.5)t = (5π/3)
(2/2.5) × t = (5/3)
t = (5/3) × (2.5/2) = 2.0833333 = 2.08 s to the neareast hundredth of a second.
Hope this Helps!!!
