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
Vaselesa [24]
3 years ago
15

What is the sum of the sequence 1+3+5+7+...+99 Use Gauss's approach to find the following sum.

Mathematics
1 answer:
jenyasd209 [6]3 years ago
5 0
Gauss's approach is to add the same sequence in reverse order, namely

S=1+3+5+7+......+95+97+99
S=99+97+95+......+7+5+3+1
---------------------------------------
2S=(1+99)+(3+97)+(5+95)+......(95+5)+(97+3)+(99+1)=50*100=5000
=> sum = (2S)/2 = 5000/2=2500.
You might be interested in
Zake made a scale drawing of the elementary school . The schoolyard is 120 millimeters long in the drawing . The actual schoolya
Vitek1552 [10]
I think the answer is 4m
7 0
2 years ago
Mei likes to make desserts for bake sales. Last month, she made 2 batches of brownies and 3 batches of cookies, which called for
tino4ka555 [31]

Answer: she uses 2 eggs for one batch of brownies and 4 eggs for one batch of cookies.

Step-by-step explanation:

Let x represent the number of eggs that she uses for one batch of brownies.

Let y represent the number of eggs that she uses for one batch of cookies.

Last month, she made 2 batches of brownies and 3 batches of cookies. This means that

2x + 3y = 16 - - - - - - - - - -1

The month before, she baked 1 batch of brownies and 1 batch of cookies, which required a total of 6 eggs. This means that

x + y = 6 - - - - - - - - - - - - - 2

Multiplying equation 1 by 1 and equation 2 by 2, it becomes

2x + 3y = 16

2x + 2y = 12

Subtracting, it becomes

y = 4

Substituting y = 4 into equation 2, it becomes

x + 4 = 6

x = 6 - 4 = 2

7 0
3 years ago
Which function has an inverse that is also a function?
natali 33 [55]

Answer:

Which function has an inverse that is also a function

7 0
2 years ago
HELP PLEASE HELP HELP
kupik [55]
I think it’s 0but not s
5 0
2 years ago
In the first year of a 10,000 investment the interest rate was 6%. All earned interest remained invested for the second year, an
Aleks04 [339]

Answer:

13.4%

Step-by-step explanation:

First year:

$10,000*6% = $600

New balance = $10,600

Second Year:

$10,600*7% = $742

$10,600+ $742 = $11,342

Total Return:

Final Balance - Initial balance

$11,342 - $10,000 = $1,342

$10,000*x ÷ $1,342

x = $1,342/$10,000

x = 0.1342

0.134 = 13.4%

7 0
3 years ago
Other questions:
  • Can someone help me with these two questions please??
    6·1 answer
  • Mr. Wayne uses his cell phone for work. He is reimbursed $45.95 each month. How much will Mr. Wayne himself pay for his family's
    8·1 answer
  • Part 1: Find the tangent line approximation to cos x at x=π/4.
    8·1 answer
  • What's -56 divided by 12
    8·2 answers
  • Explain how to find the product of the sum and difference of two terms. Give an example with your explanation.
    6·1 answer
  • Please help me with question b) and please explain!!<br>look at the attached image
    7·2 answers
  • Solve 10 X + 8 / 2 X + 7 is equal to 4 ​
    6·1 answer
  • Write 953 in scientific notation
    15·1 answer
  • PLEASE HELP I HAVE A TEXT TOMORROW
    6·1 answer
  • How do I evaluate |4/18| ?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!