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Blababa [14]
3 years ago
13

Solve this equation: 9x + 3 = 2(x - 4) - 3(2x + 5)

Mathematics
1 answer:
Ksju [112]3 years ago
6 0

Answer: 5x

Step-by-step explanation:

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Find sin(2x), cos(2x), and tan(2x) from the given information.<br> tan(x) = − 1/2 , cos(x) &gt; 0
vodomira [7]

Answer:

  • sin(2x) = -4/5
  • cos(2x) = 3/5
  • tan(2x) = -4/3

Step-by-step explanation:

It may be easiest to start with tan(2x).

  tan(2x) = 2tan(x)/(1 -tan(x)²)

  tan(2x) = 2(-1/2)/(1 -(-1/2)²) = -1/(3/4)

  tan(2x) = -4/3 . . . . . still a 4th-quadrant angle

__

Then cosine can be found from ...

  cos(2x) = 1/√(tan(2x)² +1) = 1/√((-4/3)²+1) = √(9/25)

  cos(2x) = 3/5

__

Sine can be found from these two:

  sin(2x) = cos(2x)tan(2x) = (3/5)(-4/3)

  sin(2x) = -4/5

5 0
3 years ago
What is the answer ?
MrMuchimi
C is the correct answer
6 0
3 years ago
Read 2 more answers
Write the standard form and word form for the decimal represented by 700+40+0.6+0.08+0.006. what is the relationship between the
eduard

In standard form, it is expressed as 7.407 * 10^2 while he relationship between the values of the two 6s is that 0.6 is to the nearest tenth and 0.006 is to nearest thousandth

<h3>Expressing decimals in standard form</h3>

The standard form of an equation is expressed as A * 10^n

where

A is any number between 1 and 10

n is any integer

Given the sum below;

700+40+0.6+0.08+0.006.

Take the sum of the expression

740 +0.6 + 0.08 + 0.006

740.686

In standard form, it is expressed as 7.407 * 10^2 while he relationship between the values of the two 6s is that 0.6 is to the nearest tenth and 0.006 is to nearest thousandth

Learn more on standard form here: brainly.com/question/525947

#SPJ1

6 0
1 year ago
Issac has 18 eggs. He is packing cartons with 1/3 of his eggs of carton?
docker41 [41]
He us filling it with 6 eggs

7 0
3 years ago
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Which of the following relations is not a function?
Alik [6]

Answer: A isn't a function

Step-by-step explanation:

4 0
3 years ago
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