The scale can translate just by division if we get it down to what 1 cm equals. 1 cm=3 km, so with this given information you can find:

A)
3 Cm=9 Km

B)
1=3, times both sides by 5 that is 5 Cm= 15 Km

3 0

4 years ago

Use the law of cosines to solve for the length of side b. Show all of your work for full credit.

BigorU [14]

According to the law of cosines:

$AC^2=AB^2+BC^2-2\cdot AB\cdot BC\cdot\cos33^{\circ}$ .

Substituting all the values we know and finding $\cos33^{\circ}\approx0.84$ using a calculator, we have:

$b^2=16^2+11^2-2\cdot 16\cdot 11\cdot 0.84\\\\b^2=256+121-295.68\\\\b^2=81.32\\\\b=\pm \sqrt{81.32} \approx\pm9$

We discard the negative solution clearly.

Answer: b=9 units

8 0

3 years ago

Read 2 more answers

Need help Award: brainiest

bazaltina [42]

1: 1/5 + 3.4 = 3.6

2: 0.875 - 3/20 = 0.725

3: 0.1 - ( -31/50) = 0.72

4: 0.3 - 5/24 = 0.09 (5/24 = 0.2083333... So, it has been rounded to 0.21)

5: -5/6 x -0.9 = 0.72 (-5/6 = -0.833333.... It has been rounded to -0.8)

6: 1 3/4 / 2 = 0.875

I hope this helps. :)