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yawa3891 [41]
3 years ago
13

I really need help with this, thank you!!!

Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

Answer:

6. 60°; 7. 5.20; 8. 7.96

Step-by-step explanation:

5. <em>Draw ∆ABC </em>

See Fig. 1 below

6 .<em> Determine m∠C </em>

∠A + ∠B + ∠C = 180

40 + 80 + ∠C = 180

       120 + ∠C = 180     Subtract 120 from each side

             m∠C = 60°

7. <em>Determine a.</em>

By the law of sines,

a/sinA = c/sinC     Multiply each side by sin A

a = c(sinA/sinC)

  = 7 × (sin40/sin60)

  = 7 × 0.6428/0.8660

  = 5.20

8. Determine b.

b/sinB = c/sinC     Multiply each side by sin B

b = c(sinB/sinC)

  = 7 × (sin80/sin60)

  = 7 × 0.9848/0.8660

  = 7.96

Lyrx [107]3 years ago
3 0

Answer:

6. 60°

7. 5.19559

8. 7.96011

Step-by-step explanation:

6. The sum of angles in a triangle is 180°, so the remaining angle is ...

  180° -40° -80° = 60°

7. The lengths of sides are proportional to the sine of the opposite angle (Law of Sines).

  a = c·sin(A)/sin(C) = 7·sin(40°)/sin(60°) ≈ 5.19559

8. Same explanation as 7.

  b = c·sin(B)/sin(C) = 7·sin(80°)/sin(60°) ≈ 7.96011  

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Feliz [49]

Answer:

The greatest number of stamps that Nathan can put on each page = 16.

Step-by-step explanation:

Given:

Nathan has:

80 US stamps

64 Canadian stamps

32 Mexican stamps

The stamps need to put on a page such that each page has same number of same country stamps on each page.

To find the greatest number of stamps he can put on each page.

Solution:

In order to find the greatest number of stamps Nathan can put on each page, we will find the G.C.F. of the three numbers.

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80,64,32

<em>We will list down the prime factors of each number.</em>

80=2\times 2\times 2\times 2\times 5

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Answer:

=3651 km^2

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