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

What is an incentive

Both numbers have three significant figures. How many significant figures should be recorded for the answer to the division problem below? [tex]43.6 \div 21.2[/

What are bolivia's natural resources? silver and salt copper and gas natural gas, iron and magnesium leather and gas answer is c

3. sasha is attending a school orchestra concert. she sees her math teacher seated 2 meters ahead of her and her science teacher seated 4 meters to her right. h

What is the ratio 14:4 in its simplest form

Can the base of a exponential function be 1?

The table shows five transactions and the resulting account balance in a bank account, except some numbers are missing. Fill in the missing numbers. transactio

Is it ever okay for a country to push its form of government on another country? if so, what circumstances would make it okay? if not, what makes it unethical?

During a thunderstorm yesterday, 600 millimeters of rain fell in 30 minutes. What is the unit rate for millimeters per minute? Use pencil and paper. Describe

What are bolivia's natural resources? silver and salt copper and gas natural gas, iron and magnesium leather and gas answer is c