Answer:
First choice: 58 seconds.
Step-by-step explanation:
27.8 is approximately 28 seconds, because 8 ≥ 5, so the number rounds up.
30.12 is approximately 30 seconds, since 1 < 5.
So, 28 + 30 is 58. Therefore, 27.8 + 30.12 ≈ 58.
Just round them then add together
1st one Convection 2nd one Conduction
4.47
4^2+b^2=6^2
16+b^2=36
-16. -16
√b^2=√20
b=4.47
gogleeee
.25
3/4 divided by 3
