Ineed !
find the sum 21 + 25 + 29 + + 253
a) 8,083
b) 7,946
c) 2,360
d) 7,493

Answers

5(2a-5+b). xbox xboxxbx xb

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

328

Step-by-step explanation:  I don't know if you worded the question wrong or if I did something wrong, but that is the answer I got.

8083

Step-by-step explanation:

21+25++253 this is an AP

a=21 FIRST TERM

d=25-21=4 COMMON DIFFERENCE IS OBTAINED BY SUBTRACTING PREVIOUS TERM

WE WILL FIND FIRST NUMBER OF TERMS

an=a+(n-1)d

253=21+(n-1)(4)

253-21=(n-1)4

232 =(n-1)4

232/4 =n-1

58 =n-1

n=58+1

n=59

now S=n(a+l)/2

s=59(21+253)/2

s=8083



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