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lina2011 [118]
3 years ago
10

PLS HELP I RLY NEED IT

Mathematics
2 answers:
never [62]3 years ago
5 0

Answer:

cos 60° = 1/2, because the cosine and sine are complements

Step-by-step explanation:

I took the test.

Amiraneli [1.4K]3 years ago
4 0

Answer:

d. cos 60° = 1/2, because the cosine and sine are complements

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Which of the following is equivalent to x^5y^2/xy^2 when x is not equal to 0 and y is not equal to 0
vichka [17]

x^5y^2/xy^2

= x^5-1 * y^2-2

= x^4

6 0
2 years ago
Explain the meaning of the negative slope in the situation
Vinil7 [7]

 A line with a negative slope is a line that is trending downward from left to right. In other words, the line's rise to run ratio is a negative value. Negative slope line. In this image, the car is driving down a hill that has a negative slope.

3 0
3 years ago
Please help me with this
zimovet [89]

Answer:

all u have to do is dvide

4 0
3 years ago
Read 2 more answers
Nd the sales price of the following item. A camera originally costing $139.99, marked down $18.50
prisoha [69]
$139.99+ $18.50= $158.49
then you do...

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hope this helped :)
alisa202
8 0
3 years ago
Read 2 more answers
WHAT IS X³-27 SIMPLIFIED
Eduardwww [97]

Answer:

<u>It</u><u> </u><u>is</u><u> </u><u>(</u><u>x</u><u> </u><u>-</u><u> </u><u>3</u><u>)</u><u>³</u><u> </u><u>-</u><u> </u><u>9</u><u>x</u><u>(</u><u>3</u><u> </u><u>-</u><u> </u><u>x</u><u>)</u>

Step-by-step explanation:

Express 27 in terms of cubes, 27 = 3³:

=  {x}^{3}  -  {3}^{3}

From trinomial expansion:

{(x - y)}^{3}  = (x - y)(x - y)(x - y) \\

open first two brackets to get a quadratic equation:

{(x - y)}^{3}  = ( {x}^{2}  - 2xy +  {y}^{2} )(x - y)

expand further:

{(x - y)}^{3}  =  {x}^{3}   - y {x}^{2}  - 2y {x}^{2}  + 2x {y}^{2}  + x {y}^{2}  -  {y}^{3}  \\  {(x - y)}^{3}  =  {x}^{3}  -  {y}^{3}  + 3x {y}^{2}  - 3y {x}^{2}  \\  {(x - y)}^{3}  =  {x}^{3}  -  {y}^{3}  + 3xy(y - x) \\  \\ { \boxed{( {x}^{3} -  {y}^{3} ) =  {(x - y)}^{3}   - 3xy(y - x)}}

take y to be 3, then substitute:

( {x}^{3}  - 3^3) =  {(x - 3)}^{3}  - 9x(3 - x)

5 0
3 years ago
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