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AURORKA [14]
3 years ago
13

Here is my question please answer and give a good explanation: Which expression cannot be used to calculate the total amount pai

d for a meal (m) including a 15% tip?
A. m+0.15m
B. m+1.15m
C. m+3/20m
D. 1.15m
Mathematics
2 answers:
Katena32 [7]3 years ago
8 0
D hope that helps good luck
Nutka1998 [239]3 years ago
6 0
D. 1.15m because it is not an equation and it doesnt equal the right equationn
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X^2-10x+29 in the form (x-a)^2+b​
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3 years ago
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garri49 [273]

Let <em>S</em> denote the sum

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We can condense this to sigma notation:

S=\displaystyle\sum_{k=1}^nk(k+2)

Expand the summand:

S=\displaystyle\sum_{k=1}^nk^2+2\sum_{k=1}^nk

Recall the Faulhaber formulas,

\displaystyle\sum_{k=1}^nk=\frac{n(n+1)}2

\displaystyle\sum_{k=1}^nk^2=\frac{n(n+1)(2n+1)}6

So we have

S=\dfrac{n(n+1)(2n+1)}6+n(n+1)=\boxed{\dfrac{n(n+1)(2n+7)}6}

7 0
3 years ago
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Lady bird [3.3K]

Answer:

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Step-by-step explanation:

PEMDAS.
3^2=9
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5 0
3 years ago
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