1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
Three-eighths of the students in a certain class are males and 3/5 of the male
Mrrafil [7]

Answer:

3/5 of the students in the class are not in accounting majors

Step-by-step explanation:

The total number of males in the class is 3/8

3/5 of them are accounting majors

The ones who are not in accounting majors are;

3/8 - 3/5 = 9/40

The total number of female students in the class is;

8/8 - 3/8 = 5/8

1/4 of them are accounting majors

The ones who are not in accounting majors are;

5/8 - 1/4 = 3/8

Total number of students not in accounting majors;

9/40 + 3/8

= 24/40

= 3/5

8 0
2 years ago
Read 2 more answers
A group of friends decided to buy a bulk of chocolate from a candy store if some friends each want 1 half of a kilogram of choco
notsponge [240]
12 People would be able to have 1 half kilogram of chocolate. 
In order to solve this problem you have to multiply 6 by 2. There are two halves in a whole. 6 times 2 is equal to 12. 
7 0
4 years ago
(secx)dy/dx=e^(y+sinx), please help me solve the differential equation. Thanks :)
nalin [4]
First, you must know these formula  d(e^f(x) = f'(x)e^x dx, e^a+b=e^a.e^b, and d(sinx) = cosxdx, secx = 1/ cosx

(secx)dy/dx=e^(y+sinx), implies  <span>dy/dx=cosx .e^(y+sinx), and then 
</span>dy=cosx .e^(y+sinx).dx, integdy=integ(cosx .e^(y+sinx).dx, equivalent of 
integdy=integ(cosx .e^y.e^sinx)dx, integdy=e^y.integ.(cosx e^sinx)dx, but we know that   d(e^sinx) =cosx e^sinx dx,
so integ.d(e^sinx) =integ.cosx e^sinx dx,
and e^sinx + C=integ.cosx e^sinxdx
 finally, integdy=e^y.integ.(cosx e^sinx)dx=e^2. (e^sinx) +C
the answer is 
y = e^2. (e^sinx) +C, you can check this answer to calculate dy/dx
7 0
3 years ago
Read 2 more answers
If <br> A = 6<br> B = 9<br> C = 15<br><br> Then what is D equal to?
Semmy [17]
A = 6
B = 9
C = 15
D = ?

From A to B, 6 + 3 = 9
From B to C, 9 + 6 = 15
From C to D, 9 + x = ?

The first time, you added 3, for the second time, you added three to the three you are adding, making it 6. So for x, x = 6 + 3, which = 9

9 + 9 = 18

D = 18 should be your answer

hope this helps
6 0
3 years ago
Solve for x <br> triangle abc is similar to triangle aed
3241004551 [841]

Answer:

9/5 or 1.8

Step-by-step explanation:

triangle aed is larger than triangle abc by a scale factor of 5; we know this because side ed is 5 units and cb, the corresponding side in triangle abc, is 1. if ad has a length of 9, the length of ab must be 9 divided by five. thus, z is equal to 9/5 or 1.8.

6 0
3 years ago
Other questions:
  • What is the index when the expression x^2/3<br> is rewritten as a radical expression?
    9·1 answer
  • Classify the following triangle
    6·1 answer
  • I need help with a problem
    5·1 answer
  • What are the solutions of the compound inequality 2d + 3 ≤ –11 or 3d – 9 &gt; 15?
    8·1 answer
  • I need help on this...
    15·1 answer
  • A small juice company spends $1200 per day on business expenses plus $1.10 per bottle of juice them make. They charge $2.50 for
    9·1 answer
  • Lily took a survey of 80 students on 7th grade and 150 students in 8th grade she found that 80% of the 7th graders like country
    13·1 answer
  • What is the value of the expression (−2 4/5)÷(−1.4)
    9·1 answer
  • What is the value of 6x - 3y if x = 5 and y = -1?
    9·2 answers
  • Allen is on the football team this year but he has poor time management skills. His mother told him that he is off the team if h
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!