alan30
alan30
02-09-2017
Mathematics
contestada
how to find the sum of 2+4+6....+40?
Respuesta :
KhaiLi
KhaiLi
02-09-2017
Answer 420.
a, is the first term. d is difference.
Since this is an arithmetic progression, I use this formula.
Un = nth term
Sn = sum of terms.
First find the number of terms, which is 20.
Then use the second formula to find the sum.
Answer Link
VER TODAS LAS RESPUESTAS ( 84+ )
Otras preguntas
Can anyone help please
Which of these best describes the political authority of Greek city-states
plz help me brainliest to whoever answers first.
List two similarities and one difference between the Direct Stafford Loan and The Perkins Loan. Two similarities: - - One Difference: -
A square has a perimeter of 36 units. One vertex of the square is located at (3, 5) on the coordinate grid. What could be the x- and y-coordinates of another ve
First african american to win a nobel peace prize for mediating the arab israeli truce
Which statement about the setting of the excerpt from A Long Way Gone is true? A.The story takes place in three locations and includes multiple time periods. B.
How would you find out if the enthalpy for the two questions exothermic or endothermic?
Describe the two fronts of World War II
Leia atentamente o texto abaixo: Para se candidatar a um emprego, o recém-formado compete com levas de executivos de altíssimo gabarito, desempregados. O jovem,
