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Ainat [17]
3 years ago
15

A cosine function has a period of 5, a maximum value of 20, and a minimum value of 0. The function is not a reflection of its pa

rent function over the x-axis.
Which function could be the function described?

A: f(x)=10cos(2π/5 x)+10
B: f(x)=10cos(5x)−10
C: f(x)=−10cos(5x)+10
D: f(x)=−10cos(2π/5 x)+10

Mathematics
1 answer:
Alika [10]3 years ago
7 0

Answer:

  A:  f(x)=10cos(2π/5 x)+10

Step-by-step explanation:

The coefficient of x in the cosine argument of the function will be 2π/period. Since the period is 5, the coefficient is 2π/5. This observation eliminates choices B and C.

The description "not a reflection of the parent function over the x-axis" means the multiplier of the cosine function is not negative, eliminating choice D.

The remaining choice A matches the description.

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Troyanec [42]

Answer:

90% of the club member voted for Leila

Step-by-step explanation:

Leila ran for president of the chess club and she received 36 votes . The club has a total of 40 members . The percentage of the club member that voted for her can be computed below.

total member of the club = 40

number that voted for her  = 36

a%  of 40 = 36

a/100 of 40 = 36

40a/100 = 36

cross multiply

40a = 3600

divide both sides by 40

a = 3600/40

a = 90 %

90% of the club member voted for Leila

5 0
3 years ago
Write 0.31 Repeating<br> as a fraction in simplest form.
KengaRu [80]

Answer:

The answer is 31/100

Step-by-step explanation:

Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there are  2  numbers to the right of the decimal point, place the decimal number over  10 2 ( 100 ) . Next, add the whole number to the left of the decimal.

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A 2-column table with 4 rows. Column 1 is labeled Item Sold with entries Microwave Oven, Refrigerator, Dishwasher, Washing Machi
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Answer:

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Step-by-step explanation:

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3 0
2 years ago
The diameter of each wheel of a bicycle is 28 inches. If you are traveling at a speed of 15 miles per hour on this? bicycle, thr
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Answer:

180.07 rev / min

Step-by-step explanation:

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Conversions:

1 mile = 63,360 inches

1 hour = 60 min

Hence 15 miles / hour

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= (15)(63,360) / 60  inches / min

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Answer:

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