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
Dima020 [189]
4 years ago
10

A stack of logs has 27 logs on the bottom layer each subsequent layer has five fewer logs in the previous layer at the top layer

has to logs how many total Boggs are thereal
Mathematics
1 answer:
Alinara [238K]4 years ago
3 0

Answer:

S=252logs

Step-by-step explanation:

bottom layer has a1 = 25

second layer has a2 = a1 - 1 = 24

third layer has a3 = a2 - 1 = a1 - 2 = 23

.

.

n-th layer has an an = a1 - n = 25 - n

the top layer contains an = 25 - n and we know that the top layer has 11 logs thus

25 - n = 11

n = 25 - 11

n = 14

there are 14 layers

the total number of logs is the sum of the first 14 members of the Arithmetic Progression 25, 24, 23, 23,.....11 where

an = 25 - n

Sn = (n/2)(a1 + an) and since n = 14

S14 = (14/2)(25 + 11) = 7*36 = 252

S14 = 252 logs

You might be interested in
What was Myra’s error?
zimovet [89]

Answer:

the answer is B

Step-by-step explanation:

I know because I just did the assignment and got 100

5 0
2 years ago
TriangleACB~triangleEFD
tatiyna

Answer:

y will be 4 here in the figure

3 0
3 years ago
Solve x2 – 12x + 59 = 0 for x.
mr_godi [17]
59 is a tough bird to deal with; its only factors are 1 and 59.

Thus, forget about factoring.  Instead, use the quadratic formula, or solve the equation by completing the square.

Please note:  x2 is ambiguous.  Please write x^2 to indicate "the square of 2."

Here you have 1x^2 - 12x + 59 = 0, for which a=1, b=-12 and c=59.

Use the quadratic formula:  x=[-b plus or minus sqrt(b^2-4ac)] / (2a)

to find the two roots.  Notice that the "discriminant" b^2 - 4ac will be negative, meaning that your two roots will be "complex."
3 0
3 years ago
Debra Arthur earns a weekly salary of $625 at All Sports.
Tcecarenko [31]
She earns $825 more as a head buyer than a assistant buyer
7 0
3 years ago
A store buys a jacket for $20.00 and then sells it to customers for 80% more than that. What is the selling price of the jacket?
Elis [28]
Your answer would be 36.

Hope this helped!
8 0
4 years ago
Read 2 more answers
Other questions:
  • How to determine height of rectangular prism
    13·1 answer
  • Help ASAP please! Pleaseeee n thank you
    5·2 answers
  • Find the height of the pyramid if the volume and the area are 90 cu. ft. and 30 sq. ft., respectively. A. 9 ft. B. 0.999 ft. C.
    5·1 answer
  • What would be the possible value for x?
    13·1 answer
  • Will give brainliest an lots of points please help asao
    7·2 answers
  • Jose received a $100 gift card to his favorite coffee shop for his birthday. Every week he goes to the coffee shop and spends $5
    11·1 answer
  • What are functions in math
    7·1 answer
  • When the target number is rounded to the nearest million, the millions digit is 1.
    13·1 answer
  • To what family does the function belong? Explain how you know. To what family does the function belong? Explain how you know. Wr
    14·1 answer
  • Simple probability maze
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!