midnightblack1405 midnightblack1405

03-02-2022
Mathematics

contestada

What is ∑n=17(10n+90) equal to?

Enter your answer in the box.

What is n1710n90 equal to Enter your answer in the box class=

Respuesta :

goddessboi goddessboi

03-02-2022

Answer:

910

Step-by-step explanation:

[tex]\sum_{n=1}^{7}(10n+90)\\\\=\sum_{n=1}^{7}(10n)+\sum_{n=1}^{7}(90)\\\\=10\sum_{n=1}^{7}(n)+90(7)\\\\=10(\frac{7(7+1)}{2})+630\\\\=10(28)+630\\\\=280+630\\\\=910[/tex]

Answer Link

Otras preguntas

Point A is at (6,-6) and point C is at (-6,-2). Find the coordinates of point B on line AC such that AB= 3/4 AC Urgent, need this immediately. PLS EXPLAIN

What is a current problem with Social Security? A. People live longer, meaning there are more people receiving benefits B. It has recently been called unconstit

Analyze what events lead up to the Amazon fires

Simplify $\dfrac{1}{\sqrt2+1}+\dfrac{1}{\sqrt2-1}.$

Who made Coca Cola and with what?

are these two expressions equal? (q-r)^2 and q^2-r^2?????

water in a human body is derived from

A plot of land is represented on a map whose scale is 1:10000.On the map perimeter of the plot is 24.8cm.Calculate,in km ,the actual perimeter of the plot

Find the mean absolute deviation (MAD) of the data in the bar chart below.

Assume that adults have it scores that are normally distributed with a mean of 100 standard deviation of 15 find probability that randomly selected adult has an