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Scrat [10]
3 years ago
14

Use a sum or difference formula to find the exact value of the following. cos Sin COS

Mathematics
1 answer:
Radda [10]3 years ago
3 0
Sin (2pi/3) = sin(2pi/6)

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Slove by using elimination <br> 3x+7y=27 <br> -3x+y=21
tankabanditka [31]

Answer:

x = -5

y = 6

Step-by-step explanation:

3x + 7y = 27      --------------(I)

-3x + y = 21        -----------(II)

Add equation (I) & (II) and so x will be eliminated and we can find the value of y.

(I)      3x + 7y = 27    

(II)    <u> -3x + y = 21  </u>      {add}

                8y = 48

                   y = 48/8

                   y = 6

Plugin y = 6 in equation (I)

3x +7*6 = 27

3x + 42 = 27

       3x = 27 - 42

       3x = -15

         x = -15/3

x = -5

8 0
3 years ago
11. It took Mr. Owen 12 hours to build
Charra [1.4K]

Answer:

3 feet per hours

Step-by-step explanation:

To get unit rate divide foot by hours

\frac{36}{12} = 3

3 0
3 years ago
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Do respond to this it was accident
natka813 [3]
I want points!!!!!!!!!!!!!!!!
3 0
2 years ago
Write a linear equation in standard form that crosses (4, -3) and (-2, 9): 
kirill115 [55]
Slope =(9+3)/(-2-4) = 12/-6 = -2
Y+3 = -2 (×-4)  => y=-2×+5
D is the line asked
Slope: -1/3 
D: y-6 = -1/3 (×-3) or y= -1/3× + 7
8 0
3 years ago
At a particular restaurant, each chicken wing has 80 calories and each slider has 300 calories. A combination meal with sliders
RoseWind [281]
Answer:

4 Sliders 2 chicken wings

Step-by-step explanation:
4x300=1200 2x80=160
8 0
2 years ago
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