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2 years ago

Which of the following are solutions to the the equation tan^2(2x) - 1 = 0? Check all that apply.

Mathematics

2 answers:

trasher [3.6K]2 years ago

8 0

Answer: the answers is D. -pi/8 and B. 3pi/8

Step-by-step explanation:

sergeinik [125]2 years ago

6 0

I think the correct answer is D.

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2 years ago

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A purse contains 21 coins consisting of nickels and dimes. Find the number of coins of each kind if the total value is $1.65.

MaRussiya [10]

the value of the dimes is 10(21 - 5)

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3 years ago

Sarah is cutting ribbons for a pep rally the length of each ribbon needs to be 3.72 inches if she needs 1,000 ribbons what is th

HACTEHA [7]

If she needs 1,000 ribbons at 3.72 inches each, She will need 1,000 x 3.72 which equals 3720 inches of ribbon.

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2 years ago

An ecologist studies the fox population of the arctic circle, and observes that the population loses 1/11 of its size every 7 mo

Ksju [112]

Answer: The fox population decrease 1.298% every month.

Step-by-step explanation:

Since we have given that

Initial foxes = 170000

Every 7 months, the population loses $\dfrac{1}{11}$

So, we need to find the rate of change in population every month.

So, we will use "Unitary method":

So, In every month, the population loses $\dfrac{1}{11}\times \dfrac{1}{7}=\dfrac{1}{77}$

So, the percentage would be

$\dfrac{1}{77}\times 100=1.298\%$

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3 years ago

Six less than a number is 15. Let x represent the number.

anygoal [31]

Answer: x - 6 = 15

Step-by-step explanation:

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2 years ago

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