2 years ago

Provide a statement and reason for each of the following using the indicated

Mathematics

1 answer:

grin007 [14]2 years ago

5 0

2x + 5 = 11

(-5)

2x = 6

(/2)

x = 3

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find the smallest number of terms which may be taken in order that the sum of the arithmetical series 325+350+375+.......may exc

Misha Larkins [42]

Answer is 19;

Problem
a1=325 , d=25 , S19=?
Result
S19=10450
Explanation
To find S19 we use formula
Sn=n2⋅(2a1+(n−1)⋅d)
In this example we have a1=325 , d=25 , n=19. After substituting these values into the above equation, we obtain:
Sn19=n2⋅(2a1+(n−1)⋅d)=192⋅(2⋅325+(19−1)⋅25)=192⋅(650+18⋅25)=192⋅(650+450)=192⋅1100=10450

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3 years ago

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ddd [48]

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3 years ago

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5TH GRADE MATH HELP What is 4.873 rounded to the nearest hundredth? A. 4.87 B. 4.88 C. 4.9 D. 5

timama [110]

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