cadieux
cadieux
15-11-2014
Mathematics
contestada
What is the sum of the two digit multiples of 11?
Respuesta :
superkoopasirf
superkoopasirf
15-11-2014
[tex]S = \frac{1}{2}n(a + l)[/tex]
[tex]a = 11[/tex]
[tex]l = 99[/tex]
[tex]n = 9[/tex]
[tex]S = \frac{1}{2}9(11 + 99)[/tex]
[tex]S = \frac{1}{2}9(110)[/tex]
[tex]S = \frac{990}{2}[/tex]
[tex]S = 495[/tex]
Answer Link
awesome099
awesome099
15-11-2014
11+22+33+44+55+66+77+88+99
33+77+121+165+99
110+286+99
396+99
495
Answer Link
VER TODAS LAS RESPUESTAS ( 82+ )
Otras preguntas
simplify sin(3x+13)=cos(4x)
Find the domain. f(x) = 9x - 8
Which word correctly completes the sentence? _______ turn is it to do the washing up? 1. Who’s 2. Whose 3. Whom 4. Which
An object that is dropped straight down from a height of 100 m has a vertical change in position that is less than that of an identical object thrown horizontal
Is it true The Renaissance man had the ability to link information from different areas and fields and to create new knowledge?
It solves the systems of equations.To find the method indicated like:1. Determinants2. Equalization3. Reduction4. Substitutionplease...:)
what is a dyne? Please help me
Determine the slope and the y-intercept. y = 5x + 6
differentiate between plant cell and animal cell prokaryotic cell eukaryotic cell
The greatest common factor of 3m^2n+12mn^2 is
