fafu123 fafu123

12-10-2017
Mathematics

contestada

find the sum of all 3 digit whole numbers that arw divisible by 13 ?

Respuesta :

zrh2sfo zrh2sfo

12-10-2017

We have an arithmetic sequence with

a0 = 1st 3-digit number divisible by 13
a0 = 104
d = 13 (why?)
last term is largest divisible by 13 = 988
how many terms? (988-104)/13 + 1 = 69

S = 69/2(104+988) = 37674

Answer Link

Otras preguntas

If I get $57,000 from the University of Toronto, how much would go for benefit and how much would go for tax? a) Benefit: $57,000; Tax: $0 b) Benefit: $0; Tax:

4 × 10-5 cm =______cm

Why did it take so long to discover galaxies

A company that follows total quality management (tqm) principles usually focuses primarily on customer satisfaction, employee involvement, and 1. Customer-focus

What causes the "punched-out" lesions of the skull in multiple myeloma? A) Excess platelet-derived growth factor B) Activation of RANK receptor on osteoclasts

How many 1/2 inch pieces can be cut from a piece of ribbon 7/10 of an inch long?

How Retention Factor for a Solute can be Manipulated (LC)

what technological innovation helped shift rock music from popular entertainment to art-status in the early 1960s?a) Electric amplification b) Multitrack record

In addition to tangible asset contributions, What other intangible value may a new partner bring to a partnership? 1) Financial expertise 2) Industry connection

Analyze: What Contrasts and Contradictions did you notice about George in the excerpt? Did your thoughts about a contrast or contradiction change by the end of