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Gre4nikov [31]
3 years ago
10

Please help me I have been stuck

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
8 0
I think you have to pay attention in class for this
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Please help! I will award Brainliest!
Stels [109]

Answer:

The answer to your question is x = 1.85; y° = 67.6°

Step-by-step explanation:

Law of cosines

           c² = a² + b² - 2abcos C

Process

1.- Find x

             x² = 5² + 4² - 2(5)(4)cos 20

- Simplification

             x² = 25 + 16 - 40(0.939)

             x² = 41 - 37.56

             x² = 3.44

             x = 1.85                      

2.- Find y°

Solve law of cosines for cos y°

             cos y = (5² - 4² - 1.85²) / -2(4)(1.85)

-Simplification

             cos y = (25 - 16 - 3.42) / -14.8

             cos y = 5.58 / -14.8

             cosy = -0.377

                  y = 112.1 °

- Solve using law of sines

               sin 20 / 1.85 = sin y / 5

               sin y = 5sin 20 / 1.85

               siny = 0.9243

                    y = 67.6°

Both angles (112.1 and 67.6°) are supplementary. But I think the right answer is 67.6°

7 0
3 years ago
What is the slope of this line?
Lostsunrise [7]

Answer:

the slope of this line is 3/4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Can someone help with this...
steposvetlana [31]

Answer:

I'm not sure if this is fully correct but I think it is.

Step-by-step explanation:

1)x^8

2)81y^2

3)16x^4

4)-125y^9

5)a^12b^4

6)x^32/256

7)54a^6

8)8x^10

9)-48y^4x^2

10)8192x^11y^6

11)512x^9y^3

12)-96x^14y^2

13)324m^4n^2+(n^2m/6)

14)8r^6s^10

15)6x^15y^21

6 0
3 years ago
What symbols would you use to label a line segment differently from a line?
Lapatulllka [165]
A line segment is composed of two fixed endpoints while a  line is indifinetly composed of endless points with no ends. The symbol used to differentiate the two is the symbol that is above the letters forming the line segment or line.A line has an arrow in both ends while a line segment has a symbol of a bar only above the letters
5 0
4 years ago
A box of chocolates contains 18 chocolate squares. Ten of the squares are milk chocolate, 5 are dark chocolate, and 3 are white
Dvinal [7]

Answer:

\frac{3}{18}

Step-by-step explanation:

\frac{18-10-5}{18} \\\\=\frac{3}{18} \\

Thw probability is \frac{3}{18}.

8 0
3 years ago
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