Answer:
Step-by-step explanation:
Complementary angles are angles that add up to 90°.
We have C and D as complementary.
Their sum is:
Substitute values and solve for x:
- 8x + 5x - 1 = 90
- 13x = 90 + 1
- 13x = 91
- x = 91/13
- x = 7
Answer:
c=12,564
m=1,047
Step-by-step explanation:
Answer:
a) 9 meters.
b) The total change in temperature was of 288ºC
Step-by-step explanation:
Both these questions can be solved using rules of three.
a) 72 meters in 8 seconds. How many meters it changes each second(in 1 second)?
8s - 72m
1s - x m



9 meters.
b) In 1 hour, heated by 6ºC. How much in total during 48 hours?
1h - 6ºC
48h - xºC
x = 48*6
The total change in temperature was of 288ºC
<span>D:386.85 square centimeters</span>