3 years ago

I need help please I don’t understand it at all

Mathematics

1 answer:

Levart [38]3 years ago

7 0

Step-by-step explanation:

Blue portion is a rectangle:

$\therefore \: perimeter \: \\ = 2(5x + 5) + 2(3x - 7) \\ = 10x + 10 + 6x - 14 \\ = 16x - 4$

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Write a cosine function that has an amplitude of 3, a midline of 2 and a period

marissa [1.9K]

Answer:

f(x) = 3 cos (2Pi / period value ; x )+ 2

or see answer using 2 as the period see answer in bold below.

Step-by-step explanation:

cosine function amplitude of 3 is A = 3

The period is used to find B

You need to show period value as the denominator and work out from there with 2PI as a function numerator to show as 2pi / period can be a data angle

C is the adding value.

Acos (Bx) + C

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However f 2 is also the period found

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