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Q. Find the middle term of the AP: -15, -11, _ _ _, 53.
manishlodhi:
15,30,42
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Answered by
1
Here first term,a=-15
Common difference,d=-11+15=4
last term=53
an=a+(n-1)d
53=-15+(n-1)4
53=-19+4n
4n=53+19
n=72/4
n=18
Number of terms =18
Middle term=18/2=9
a9 = -15+(9-1)4
a9=-15+32
a9=17
The middle term of the AP is 17
Common difference,d=-11+15=4
last term=53
an=a+(n-1)d
53=-15+(n-1)4
53=-19+4n
4n=53+19
n=72/4
n=18
Number of terms =18
Middle term=18/2=9
a9 = -15+(9-1)4
a9=-15+32
a9=17
The middle term of the AP is 17
there are 2 middle terms
Answered by
2
Answer:
Speed
The physical quantity which remains constant in uniform circular motion is Speed. Uniform circular motion means that the body is moving along a circular path with constant speed.
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