I think its a. but i could be wrong
-5/2 is equivalent to -2.5, and if you multiply 2.5 by 2 you get 5, and you have to have the negative, so add that to the 5 and you get -5. Hope this helps!
Answer: D
Step-by-step explanation:
Standard Deviation σ2 =
Σ(xi - μ)2/N
=(1 - 5.3)2 + ... + (9 - 5.3)2/10
=68.1/10
= 6.81
σ = √6.81
= 2.60959767014
B) σ2 =
Σ(xi - μ)2/N
=(3 - 61.7)2 + ... + (99 - 61.7)2/10
=58414.1/10
= 5841.41
σ = √5841.41
= 76.429117488036
C) (1 - 11.4)2 + ... + (1 - 11.4)2/10
=8758.4/10
= 875.84
σ = √875.84
= 29.59459410095
D) (79 - 79)2 + ... + (79 - 79)2/10
=0/10
= 0
σ = √0
= 0
I hope this helps, mark as Brainliest please.
Expanded Exponential Form:
<span><span>3 × </span></span>
<span><span>+<span>3 × </span></span></span>
<span><span>+<span>7 × </span></span></span>
<span><span>+<span>0 × 1</span></span></span>
<span><span>+<span>6 × </span></span></span>
<span><span>+<span>0 × </span></span></span>
<span><span><span><span>
Add as Brainliest answer when you get the chance to :)
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When you're out shopping and something you want to buy is on sale. You can take the original price and give it's percentage to find out how much it really is.
