3 years ago

How would i determine x ?

1 answer:

7 0

Judging by the little marks on the sides, EF is the midsegment. midsegment is half of the base length
so 3x+5=80
3x=75
x=25

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Art [367]

Answer:

1.5 km/hour

Step-by-step explanation:

d is the David's speed in still water

c is the speed of the current

Going with the current, he travels d+c km per hour.

Going against the current, he travels d-c km per hour.

d+c = (20 km)/(2.5 hours) = 8 km/hour

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Add the equations to eliminate the c terms

d+c = 8

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3 years ago

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soldi70 [24.7K]

Answer:

Step-by-step explanation:

The standard form for this function is

y = Asin(Bx - C) + D where

A is the amplitude,

B is used to find the period in the formula $period=\frac{2\pi}{B}$ ,

C is used to find the phase shift in the formula $ps=\frac{C}{B}$ ,

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We have no given phase shift, so there is no C value. The amplitude is easy; we just fill in A as 4. The period is another story:

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3πB = 4π and

$B=\frac{4\pi}{3\pi}$ so

$B = \frac{4}{3}$ so the function is

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Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

It’s 4

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