3+2=5
5+2=7
7+2=9
9+2=11
.
.
.
so d=2
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formula:a(n)=a(1)+(n-1)d
a(n)=3+(n-1)2
a(n)=3+2n-2=2n+1
<span>Question No.2
</span>
speed= distance/ time
1200km/0.006s= 200 000 km/s
<span>Question 4
</span>
wavelength = wavespeed / frequency
wavespeed = 16/8 = 2
Question 5
(400/60s) = 6.6667 waves/ sec (Hz).
<span>Velocity = 0.008m/sec. </span>
<span>Wavelength = (v/f) = 0.008/6.6667 = 0.0012 metre (1.2mm).
</span>
Answer:
is 195sq ft
Step-by-step explanation:
Answer:
Step-by-step explanation:
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<span>graph a horizontal line through the point (0, negative 4)</span>
u should really learn to upload pics