3 years ago

What is greater one inch or one centimeter

Mathematics

2 answers:

Lena [83]3 years ago

7 0

1 centimeter is equivalent to 0.394 inches, so inches are greater.

maria [59]3 years ago

5 0

One inch is greater than one centimeter

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The sum of the first 150 negative integers is represented using the expression

Leona [35]

Answer:

$\large\boxed{-11,325}$

Step-by-step explanation:

First simplify:

$-1-(n-1)=-1-n-(-1)=-1-n+1=-n$

Therefore we have:

$\sum\limits_{n=1}^{150}[-1-(n-1)]=\sum\limits_{n=1}^{150}(-n)=(-1)+(-2)+(-3)+...+(-150)\\\\-1,\ -2,\ -3,\ -4,\ ...,\ -150-\text{it's the arithmetic sequence}\\\text{with the common difference d = -1.}\\\\\text{The formula of a sum of terms of an arithmetic sequence:}\\\\S_n=\dfrac{a_1+a_n}{2}\cdot n\\\\\text{Substitute}\ n=150,\ a_1=-1,\ a_n=-150:\\\\S_{150}=\dfrac{-1+(-150)}{2}\cdot150=(-151)(75)=-11,325$