Answer:
true , true, and I'm not sure about the last one!
Explanation:
Answer:
<em>The actual dimensions of the classroom are 50 cm x 70 cm</em>
Explanation:
<u>Scaling
</u>
When we need to represent real-world dimensions into small spaces, we use scaling. Distance scaling tells us what is the equivalence between the real units and the scaled units. In this case, we are told that 10 cm is equivalent to 1 meter. As 1 meter is 100 cm, it means that the scale is 100/10=10. Thus, each centimeter in the paper is equivalent to 10 cm in the real distance.
The classroom is 5 cm x 7 centimeters. Scaling back to the real values, the classroom has measures of 50 cm x 70 cm.
An angle of 60 degrees with the negative y-axis could mean 60 degrees clockwise or counterclockwise, which translates to two possible angles (starting from the positive x-axis and moving counterclockwise) of 210 degrees or 330 degrees.
Then the horizontal component 
of a velocity vector 
with magnitude 
could be one of two expressions:
Convert the temperature scales:
-> TC (Celsius Temperature)
-> TF (Fahrenheit Temperature)
->TC/5 = TF - 32/9
-30/5 = TF - 32/9
-270 = 5TF - 160
5TF = -270 + 160
5TF = -110
TF = -110/5
TF = -22 Fahrenheit
- 30 °C = -22 °F
So, -30°C is warmer than -30°F.
-30°F is lower than (30°C) -22°F.
