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elena55 [62]
3 years ago
11

I need to find the approximate sum. ​

Mathematics
1 answer:
Bad White [126]3 years ago
7 0

Answer:

135 to nearest whole number.

Step-by-step explanation:

∑ 5(4/3)^(k-1)   from k = 1 to k = 8.

First term = 5 , second term = 5*4/3

This is a Geometric series with first term a1 = 5 and common ratio r  = 4/3.

The sum of n terms = a1(r^n - 1) / (r - 1).

The sum of 8 terms is given by  5 * (4/3)^8 - 1) /  ( 4/3 - 1)

= 135 to the nearest whole number.

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Ben has 90 in his saving account. He plans to deposit 36 per week to build his account balance
Gelneren [198K]

Answer:

he will increase his account balance by $20 a year

Step-by-step explanation:

7 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is 2x−10y=100. Fully reduce your answer.
Aliun [14]

Answer:

2x-10y=100

-8xy=100

xy=12

3 0
2 years ago
What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6m?
WINSTONCH [101]
Sector area = (central angle / 360) * PI * radius^2
sector area = (210 / 360) * PI * 2.3^2
sector area = (7 / 12) * PI * 5.29
<span><span><span>sector area = 9.6944313302 </span> </span> </span>
<span>sector area = 9.7 square meters (rounded)

Source:
http://www.1728.org/radians.htm

</span>
8 0
3 years ago
7.  
Leokris [45]
416.25

375*.11=41.25

41.25+375=416.25
5 0
3 years ago
Read 2 more answers
I need help with this homework can anyone help me. I need work too, help is appreciated:)
quester [9]
Let x = # of tickets sold in advance 
Let y = # of tickets sold the day of 


Cost of the tickets & total sales: 6x & 10y = 6828

You also know y = x + 206

Take the equation mentioned above y = x + 206 and sub it in anywhere the variable y is in the other equations so you'll have this:
6x + 10(x+206) = 6828

Now solve for x to get x = 298

To finish the problem, you must now find the number of y tickets sold.
Sub your x value that you found back into the equation y = x + 206 and you'll get y = 504.

So, 298 tickets were sold in advance and 504 tickets were sold the day of
3 0
3 years ago
Read 2 more answers
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