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ludmilkaskok [199]
3 years ago
13

A telephone call costs c cents for the first 3 minutes and m cents for each additional minute. Which expression represents the c

ost, in cents, of a 6-minute call?
Mathematics
1 answer:
tekilochka [14]3 years ago
4 0

Answer: c+3m

Step-by-step explanation:

Given

A telephone call costs c cents for first 3 minutes and m cents for each additional minute.

Any call beyond 3 minutes costs

\Rightarrow c+mt

where t is the minutes spent beyond 3 minutes

For 6 minutes , t is 3

thus, it can be written

\Rightarrow c+3m

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romanna [79]
The tensile strength of spider silk is about 1150 MPa, which is 1.15 x 10^9 N/m². 

<span>So given that the diameter of the spider silk is 0.15 mm or 1.5 x 10^-4 m. The cross sectional area is approximately: </span>

<span>A = πr² = (3.14)(1.5 x 10^-4 / 2)² = 1.767 x 10^-8 m² </span>

<span>So this means that the amount of force we can apply before the the silk thread is broken is: </span>

<span>F = PA = (1.15 x 10^9)(1.767 x 10^-8) = 20.32 N </span>

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3 years ago
A sine curve with a period of 8, an amplitude of 2, a left phase shift of /3, and a vertical translation down 5 units.
S_A_V [24]

Answer:

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Step-by-step explanation:

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A = 2, D = -5 (down), C = -3 (left).

8 = 2π/B; B = π/4

Therefore:

y=2sin[\frac{\pi}{4}(x+3) ]-5

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ch4aika [34]
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Step-by-step explanation:

Because 0.21 times 100 gives 21 percent

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