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Arisa [49]
3 years ago
14

Verify the identity. sin(3pi - x) = sinx

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

we use the angle- sum and difference trigonometric identity to simplify the expression sin(3pi - x). This is equal to sin 3 pi cos x - cos 3 pi sin x. In this case, sin 3 pi  is equal to zero while cos 3 pi is equal to -1. Hence the answer simplified is equal to sin x .
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Write two ratios equivalent to 24 : 9.
notsponge [240]

Answer:

8:3

16:6

Step-by-step explanation:

First, let's check if 9 and 24 have any common factor. If they do have any common ones, we must find the GCF (greatest common factor).

Factors of 9: 1, 3, 9

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

The common factors both of the numbers share and 1 and 3. To find the GCF, simply compare one of the factors to the other.

1 < 3

Now that we know the GCF, we can divide the two numbers in the ratio 24 : 9 by it (3).

24:9

24/3:9/3

<u>8:3</u>

Now that our ratio is simplified, it's going to be much easier to find more ratios that are equivalent. <u>8:3</u> is already one equivalent ratio, but if we multiply each number in the ratio by any other number, we can get a new equivalent ratio. Let's multiply each number in the ratio by 2:

<u>8:3</u>

8 ⋅ 2:3 ⋅ 2

<u>16:6</u>

<u></u>

So, another equivalent ratio to 24:9 (and <u>8:3</u>) is <u>16:6</u>.

3 0
3 years ago
Draw a picture to support your work and how many yards did the grasshopper travel after hopping twice
tankabanditka [31]
So the grasshopper traveled 2 yards in each jump
7 0
3 years ago
4x + 6y = 18 &amp; 4x – 2y = 10
kherson [118]

Answer:

x=4.875

y=-0.25

Step-by-step explanation:

4x – 2y = 10

2x-y=10

y=2x-10

4x + 6y = 18

2x+3(2x-10)=9

8x=39

x=4.875

y=2(4.875)-10

y=-0.25

8 0
3 years ago
Mario is paid a salary of $500 plus 8% of sales. Calculate his total income if his sales total $10,890 in the
Gre4nikov [31]

Answer:

His total income is of $1,371.2.

Step-by-step explanation:

His salary is of $500, plus 8% of his sales.

In this question:

Sales of $10,890. So his salary is given by:

S = 500 + 0.08*10890 = 500 + 871.2 = 1371.2

His total income is of $1,371.2.

7 0
3 years ago
which of the following is true regarding the solutions to the logarithmic equation below 2log ^6(x)=2 log ^6 (x^2 )=2 x^2=36 x=6
nekit [7.7K]

Answer:

Step-by-step explanation:

I'm assuming these are logs to the base 6

2 log6 x = 2

log6 x^2 = 2

So x^2 = 6^2

x = 6, -6.

4 0
3 years ago
Read 2 more answers
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