3 years ago

Solve the equation: sin(2x)= sin x

Mathematics

1 answer:

Anna [14]3 years ago

3 0

Answer:

Below

Step-by-step explanation:

sin(2x) = 2 ×cos(x)× sin(x)

● sin(x) = 2 × cos(x) × sin(x)

● 2 × cos(x) = 1

● cos (x) = 1/2

So we can deduce that:

● x = Pi/3 + 2*k*Pi

● or x = -Pi/3 + 2*k*Pi

K is an integer

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14V + 5 − 5V = 4(V + 15)

OleMash [197]

Answer:

V=11

Step-by-step explanation:

Simplify:

14V-5V+5=4V+60

9V+5=4V+60

Subtract 4V on both sides:

9V-4V+5=4V-4V+60

Solve:

5V+5=60

Subtract 5 on both sides:

5V+5-5=60-5

5V=55

Divide by 5

V=11

Hope this helps!

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3 years ago

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Hey I need help on how to subtract 56,853 - 26,586

Aneli [31]

Answer:

The answer is 30,267.

Step-by-step explanation:

I got this by simply putting it in a calculator, just like you wrote it. Hope I helped!

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4 years ago

D • (-4) = 32 solve for d

RSB [31]

Answer:

d = -8

Step-by-step explanation:

Isolate the variable, d. Note the equal sign, what you do to one side, you do to the other. Divide -4 from both sides of the equation:

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d = -8 is your answer.

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2 years ago

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You and a friend go out to dinner. The cost of the meal is $45.22. You leave a 20% tip. The sales tax is 6% what is the total co

Doss [256]

Answer:

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3 years ago

A plane’s average speed between Tucson and Phoenix is 600 km/hr. If the trip takes 0.75 hrs. How far does the plane fly?

pashok25 [27]

Step-by-step explanation:

speed = Distance /Time

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Distance = speed * Time

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Distance = 450 km

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