Answer:
The answer is A.
Step-by-step explanation:
I took the test!
Answer:
1.mountains plains rivers
2. A
3.C
4.B
Step-by-step explanation:
yes
-2(x - 5) + 4(9 + x)
-2x + 10 + 36 + 4x
=2x + 46
if they are optional
all are correct
<h3>step by step instructions:</h3>
Correct option is
D
All are correct
the equation of a given progressive wave is
y=5sin(100πt−0.4πx) ......(i)
The standard equation of a progressive wave is
y=asin(ωt−Kx) ...(ii)
Comparing (i) and (ii), we get
a=5m,ω=100π rad s
−1
,k=o.4πm
−1
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