Pitch changes are heard when the doppler effect occurs should be the answer. I'm pretty sure.
All that are true:
sin(C) = square root 3/2
tan(C) = square root 3
sin (B) = 1/2
Answer: (4) d=112 (7) 2.75 or 2 3/4
explanation: pictured below
Answer:
Rounded to the nearest tenth: 2,252.5
Step-by-step explanation:
This number can't be a whole number since there is a decimal.
Answer:
x = -2
y = 3
Step-by-step explanation:
-5x + 3y = 19
x = 3y - 11
-5x + 3y = 19
-5(3y - 11) + 3y = 19
-15y + 55 + 3y = 19
-15y + 3y + 55 = 19
-12y + 55 = 19
-12y = 19 - 55
-12y = -36
y = -36/-12
<u>y = 3</u>
x = 3y - 11
x = 3(3) - 11
x = 9 - 11
<u>x = -2</u>
