3 years ago

At an online bookstore Alicia downloads 3 books for $9

Mathematics

2 answers:

Lisa [10]3 years ago

7 0

It’s three dollars per book I hope I helped you with your answer

emmainna [20.7K]3 years ago

4 0

$3 per book? Not sure what else the question is asking

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Harman [31]

70+80+(m+10)= 180°
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m=20°

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3 years ago

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Alja [10]

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He made a mistake in the second line.

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What is the amplitude, period, and phase shift of y= 5cos( x/2 + 2pi/3)

nordsb [41]

Y = A cos(Bx + C)
A - amplitude
$\frac{2\pi}{B}$ - period
$- \frac{C}{B}$ - phase shift

$y=5\cos{( \frac{x}{2} + \frac{2\pi}{3} )}
\\
\\y=5\cos{( \frac{1}{2}x + \frac{2\pi}{3})}
\\
\\A=5,B= \frac{1}{2},C= \frac{2\pi}{3}$

Amplitude: 5
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Phase shift: $- \frac{C}{B} =- \frac{\frac{2\pi}{3}}{\frac{1}{2}}= -\frac{4\pi}{3}$

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3 years ago

How do i do this? geometry

iren [92.7K]

Answer:

80?

Step-by-step explanation:

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