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ZanzabumX [31]
3 years ago
5

Micah is twice as old as Richard. Richard is four times as old as Ken. Ken is five years old. How old is Micah?

Mathematics
1 answer:
irinina [24]3 years ago
6 0

Answer:

the answer is 40

Step-by-step explanation:

micah is 40

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Colin is working to earn some money for a new CD player. On Saturday he earns half as much as he did on Sunday, but twice as muc
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Answer:

Friday=$10 Saturday=$20 Sunday=$40

Step-by-step explanation:

On Friday we can estimate that he earnt $10 so twice as many as that is $20 so on Saturday he could of earnt that much. Finally what is 20 half of? 40 so 10+20+40=$70

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Name the congruent sides.
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Read 2 more answers
What is 5 times 9 divided 5 add 40 subtract 100
Sladkaya [172]

Answer:

-51

Step-by-step explanation:

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2 years ago
Simplify<br><br> PLEASE HELP
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(2.24)(1.71)

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3 years ago
Find the times (to the nearest hundredth of a second) that the weight is halfway to its maximum negative position over the inter
hoa [83]

Answer:

0.20 and 0.36

Step-by-step explanation:

y(t) = 2 sin (4π t) + 5 cos (4π t)

We wish to convert this to:

y = A sin(ωt + φ)

We know that ω = 4π.  We also know the following:

5 = A sin φ

2 = A cos φ

Divide the first equation by the second equation:

5/2 = tan φ

φ = tan⁻¹(5/2)

Now, square the two equations and add them together.

5² + 2² = (A sin φ)² + (A cos φ)²

29 = A²

A = √29

The equation of the wave is therefore:

y = √29 sin(4π t + tan⁻¹(5/2))

The maximum negative position is -√29.  And half of that is -½√29.

-½√29 = √29 sin(4π t + tan⁻¹(5/2))

-½ = sin(4π t + tan⁻¹(5/2))

7π/6 + 2kπ or 11π/6 + 2kπ = 4π t + tan⁻¹(5/2)

7 + 12k or 11 + 12k = 24t + 6 tan⁻¹(5/2) / π

t = (7 + 12k − 6 tan⁻¹(5/2) / π) / 24 or (11 + 12k − 6 tan⁻¹(5/2) / π) / 24

Trying different integer values of k, we find there are two possible values for t between 0 and 0.5, both when k = 0.

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t ≈ 0.20 or 0.36

5 0
2 years ago
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