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

Which of the following is a perfect cube? 4 8 9 12

Three of the following contributed to the end of the Pax Romana (3rd century a. d. ). Which one did NOT? A 20-year plague weakened the Roman army and demoralize

Who was Martin Luther King?

why are large astronomy whole body such as planets and stars round

Why did Qin Shihuangdi force all nobles to live at the capital?

___________ journalism answers the “who, what, when, where, and why” of important issues. a. Advocacy b. Specific c. Traditional d. Pack

Can I use legalism in a sentence

School teachers, counselors, and job placement centers can help you _____.

In November 1967, General Westmoreland told the American public that _____. 1. the United States was making progress in Vietnam 2. the Vietcong were winning the

List he next 4 multiples of the unit fraction 1/6