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3 years ago

Please help me!

Mathematics

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Part A: x = y+45

Part B: 40 125-45 = 80, 80÷2 = 40

Part C: Yes, because 80+45 adds up to 125.

Hope this helps! :)

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Write an equation of the cosine function with amplitude pi/2 and period 3

juin [17]

Answer:

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Step-by-step explanation:

Given

$Amplitude = \frac{\pi}{2}$

$Period = 3$

Required

Write the equivalent cosine function

The general formula is:

$y = acos(bx)$

Where

$amplitude = |a|$

$period = \frac{2\pi}{b}$

Substitute $\frac{\pi}{2}$ for amplitude in $amplitude = |a|$

$|a| = \frac{\pi}{2}$

$a = \frac{\pi}{2}$

Substitute 3 for period in $period = \frac{2\pi}{b}$

$\frac{2\pi}{b} = 3$

Multiply both sides by b

$2\pi = 3b$

Divide through by 3

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Hence;

$y = acos(bx)$ becomes

$y = \frac{\pi}{2}cos(\frac{2\pi}{3}x)$

5 0

3 years ago

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liq [111]

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D is greater than or equal to 4

8 0

3 years ago

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blondinia [14]

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3 years ago

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Step-by-step explanation:

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3 years ago

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Liula [17]

Answer:

it make sense

Step-by-step explanation:

(X is another 2)

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2x+1=5

we're gonna barrow 5 from the first question and get the answer in the second question

so..

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hope it helps

7 0

3 years ago