MichaelaE MichaelaE
  • 22-07-2017
  • Mathematics
contestada

What is the sum of a 36-term arithmetic sequence where the first term is 11 and the last term is 151?

Respuesta :

FriendToDino
FriendToDino FriendToDino
  • 22-07-2017
Their are 36 terms.
f(1) is 11.
f(36) is 151.
f(2)=11+x
f(35)=151-x
The key to solving this is to make pairs by adding the first term and the 36th term. The 2nd term and the 35 term and so on. They pairs all equal 162 and their are 18 pairs or 36/2 pairs. 18*162=2916.
Answer Link

Otras preguntas

What is the mass in grams of aluminum metal (26.98 g/mol) that reacts to form 2.80 g of iron (55.85 g/mol)? 3 FeO (l) + 2 Al (l) → 3 Fe (l) + 1 Al2O3 Starting w
the absence of special food and water conducting system restricts the body size in
What is the slope of the line x=4? O A. 0 O B. Undefined O C. 4 • D.1
How is the transaction journalized? Will mark brainliest
differentiate t^4 In(8cost)
A circle passes through the points (3, 2) and (7, 2) and has radius 2√2. Find the two possible equations for this circle.​
What is the volume, in mL, of a solution that is 0.421 M K2SO3 and was prepared by dissolving 16.7 g of solid potassium sulfite in water?
If the point B (-1, -10) is reflected over the line y = x, the coordinates of B’ would be ________.
In the figure to the​ right, ABC and ADE are similar. Find the length of EC. The length of EC is ___.
a cubical box of mass 2kg with each side 2 cm is lying on the ground. Calculate the pressure exerted by the block on the ground​