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Leokris [45]
3 years ago
7

Which of the following are equivalent to the function y = 4cos x - 2? Check all that apply.

Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
8 0
The answer is 
<span>D. y = 4cos(-x) - 2
proof
cosine is an even function, it means cos(-x) = cosx
so </span>y = 4cos(-x) - 2 = y = 4cos(x) - 2
valina [46]3 years ago
6 0

Answer:

According to Apex, the answer is B and D.

Step-by-step explanation:

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The radius of a birthday cake is 5 inches. Icing will decorate the top edge of the cake.
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Answer:

Step-by-step explanation:

circumference= pi * diameter

diameter= 2 * radius

circumference= pi *2(5)

c= 10pi

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In a school,7÷16of the students are girls. what fraction of the students are boys?
xxMikexx [17]

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9/16

Step-by-step explanation:

6 0
3 years ago
Yalll n-4 = 3n + 6 do me a favah
Otrada [13]
<h2>Answer:</h2><h2>n=-5</h2>

n

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4

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n-4=3n+6

n−4=3n+6

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1

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4

4

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−

4

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3

+

6

n-4=3n+6

n−4=3n+6

−

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+

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n-4+{\color{#c92786}{4}}=3n+6+{\color{#c92786}{4}}

n−4+4=3n+6+4

2

Simplify

3

Subtract

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4

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5

Divide both sides of the equation by the same term

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5 0
3 years ago
Read 2 more answers
Question 4 (20 points)
Blababa [14]

Answer:

The answer is C 128 cm3

Step-by-step explanation:

5 0
3 years ago
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A marketing firm would like to test-market the name of a new energy drink targeted at 18- to 29-year-olds via social media. A st
Anon25 [30]

Answer:

(a) The probability that a randomly selected U.S. adult uses social media is 0.35.

(b) The probability that a randomly selected U.S. adult is aged 18–29 is 0.22.

(c) The probability that a randomly selected U.S. adult is 18–29 and a user of social media is 0.198.

Step-by-step explanation:

Denote the events as follows:

<em>X</em> = an US adult who does not uses social media.

<em>Y</em> = an US adult between the ages 18 and 29.

<em>Z</em> = an US adult between the ages 30 and above.

The information provided is:

P (X) = 0.35

P (Z) = 0.78

P (Y ∪ X') = 0.672

(a)

Compute the probability that a randomly selected U.S. adult uses social media as follows:

P (US adult uses social media (<em>X'</em><em>)</em>) = 1 - P (US adult so not use social media)

                                                   =1-P(X)\\=1-0.35\\=0.65

Thus, the probability that a randomly selected U.S. adult uses social media is 0.35.

(b)

Compute the probability that a randomly selected U.S. adult is aged 18–29 as follows:

P (Adults between 18 - 29 (<em>Y</em>)) = 1 - P (Adults 30 or above)

                                            =1-P(Z)\\=1-0.78\\=0.22

Thus, the probability that a randomly selected U.S. adult is aged 18–29 is 0.22.

(c)

Compute the probability that a randomly selected U.S. adult is 18–29 and a user of social media as follows:

P (Y ∩ X') = P (Y) + P (X') - P (Y ∪ X')

                =0.22+0.65-0.672\\=0.198

Thus, the probability that a randomly selected U.S. adult is 18–29 and a user of social media is 0.198.

6 0
3 years ago
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