Answer:
Option A, 19
Step-by-step explanation:
<u>Step 1: Find how many students are less than 69 inches</u>
65" + 66" + 67" + 68"
1 + 1 + 9 + 8
19
Answer: Option A, 19
Answer:
2 inches per hour, 5 inches, y=2x+5
Step-by-step explanation:
No, I don't think I will
Answer:
Q1. 1050 miles
Q2. 1h 30m
Step-by-step explanation:
Q1. 1h = 300 miles
3
h = 3.5 × 300 miles
= 1050 miles
Q2. 68km = 1h
102km = 
× 1h
= 1.5h
= 1h 30m
Answer:
Yes, because when waves are at the same place at the same time, the amplitudes of the waves simply add together and this is really all we need to know!
Step-by-step explanation:
The sum of two waves can be less than either wave, alone, and can even be zero. This is called destructive interference.
If we place the waves side-by-side, point them in the same direction and play the same frequency, we will have constructive interference.
Answer:
105°
Step-by-step explanation:
The entire shape equals 720°, so subtract all the other angles from 720 and you get your answer
