4 years ago

Enter your answer in the box.

1 answer:

8 0

This is an arithmetic series,
so
S(n) = (n/2)*(a(1)+a(n))
S(25) = (25/2)*(a(1)+a(25))
n=25
a(n) = 3n-2
a(1)= 3*1-2=1
a(1)=1
a(25) = 3*25-2=75-2=73
a(25)=73

S(25) = (25/2)*(1+73)=(25/2)*74=925
S(25)=925

Answer : 925

You might be interested in

Emily uses 2/3 cup of milk to make one batch of muffins .How many cups of milk will Emily use if she makes 3 batches of muffins?

asambeis [7]

If 2/3 is equal to 1 batch of muffins
than you need to multiply the fraction by 3 or 3/1
multiply the numerator by the numerator and the denominator by the denominator
2/3 *3/1 = 6/3 or simplified to...
2 cups of milk

6 0

3 years ago

Read 2 more answers

PLEASE PLEASE PLEASEEE! THIS IS DUE TOMORROW! ILL THANKS AND WHAT EVER ELSE I CAN TO WHOEVER GETS THIS!

sertanlavr [38]

1.Y=-2/6 -5

2. >

3.<

4. False because the y intercept could be a positive or negative.

That's the best I got.

3 0

2 years ago