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3 years ago

Find an identity for cos(4t) in terms of cos(t)

Mathematics

2 answers:

Ilya [14]3 years ago

4 0

Hello here is a solution :

aleksley [76]3 years ago

3 0

$\cos4t=\cos2(2t)=2\cos^22t-1$

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Refer to the figure below to complete the following item.

Dmitrij [34]

Answer:

160

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Help pls pls pls pls pls pls pls

sergiy2304 [10]

Answer:

485

Step-by-step explanation:

Q(-9) = 6(-9)² - 1 = 6×81 - 1 = 486 - 1 = 485

8 0

3 years ago

Solve the equation 2x + 4 - 9 Explain the steps<br> and properties you used.

Verizon [17]

Answer:

2x - 5

Step-by-step explanation:

2x + 4 - 9

the 2x gonna stay

so you take 4 - 9 = -5

so the answers gonna be 2x - 5

bc the 5 is negative so you gonna subtract

I hope you understand my english...

6 0

2 years ago

Nate is exponentially gaining Twitter followers! His current amount of followers is 146. His followers are increasing at a 24% r

tia_tia [17]

Answer:

(a) Growth

$(b)\ y = 146(1.24)^x$

Step-by-step explanation:

Given

$a= 146$ -- current

$r = 24\%$ --- rate

Solving (a): Growth or decay

The question says his followers increases each day by 24%.

Increment means growth.

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<em>Hence, it is a growth problem</em>

Solving (b): Equation to represent the scenario.

Since the rate represents growth, the equation is:

$y = a(1 + r)^x$

Substitute: $a= 146$ and $r = 24\%$

$y = 146 * (1 + 24\%)^x$

$y = 146 * (1 + 0.24)^x$

$y = 146 * (1.24)^x$

$y = 146(1.24)^x$

5 0

3 years ago

Plzzzzz help me on this and explain

Galina-37 [17]

The Answers are B and C
Its B because 12 is MORE than twice as much as M. Meaning 140 is larger than 2*m
Its C because again it is MORE than twice as much as M. Meaning that 140 is larger than 2m.

Answers;B,C
Hope this helped!

7 0

3 years ago