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3 years ago

Which of the expressions (on the photo document I inserted) together represent all solutions to the following equation?

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

7 0

Answer:

x =15 + 30n

Step-by-step explanation:

8cos(12x)+4=-4

Subtract 4 from each side

8cos(12x)+4-4=-4-4

8cos(12x)=-8

Divide by 8

8/8cos(12x)=-8/8

cos(12x) = -1

Take the arccos on each side

arccos(cos(12x)) = arccos(-1)

12x = 180 degrees

But we can go around in a circle of 360 and get the same result

12 x = 180+360n where n is an integer

Divide each side by 12

x = 180/12 +360n/12

x =15 + 30n

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Answer:

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Step-by-step explanation:

Please write the ratio as 3:5 or as --------

Note that 3 + 5 = 8, so that the fraction of boys in the club is 3/8 and that of girls is 5/8.

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Multiplying both sides of this equation by (8/5), to isolate c, we get:

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We could also solve this problem in the following manner:

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swat32

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goblinko [34]

Answer:

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Step-by-step explanation:

Exponential equation with $P_0$ as the initial amount and rate of r is:

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3 years ago