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
Zielflug [23.3K]
3 years ago
15

Prove the divisibility of the following numbers by 7

Mathematics
1 answer:
oee [108]3 years ago
3 0
5^5 mod 7 = 3
5^4 mod 7 = 2
5^3 mod 7 = 6

3 -2 +6 mod 7 = 0
Therefore, 5^5 -5^4 +5^3 mod 7 = 0 and that sum is divisible by 7.
You might be interested in
What is the degree 3 polynomial that has zeros -3,2 and 5 and in which the coefficient of x^2 is -8?
Setler [38]
For zeroes/roots r1,r2, r3
the facors of the polynomial is
(x-r1)(x-r2)(x-r3)

roots
-3,2,5
(x-(-3))(x-2)(x-5)
(x+3)(x-2)(x-5)
the coefient of the x term is -4
so mutliply the whole thing by 2

(2)(x+3)(x-2)(x-5)

expand
f(x)=2x^3-8x^2-22x+60
3 0
3 years ago
Joanna is paid $14 per hour is it linear
Dafna1 [17]
Well me myself and I would say yes!!!
8 0
3 years ago
MATH1314-1043,1044 16wks SPR21
Brilliant_brown [7]

Step-by-step explanation:

how where is the graph cause I don't understand that

6 0
3 years ago
I need help with this ​
Sophie [7]
X+ 8, y-11!!!!!!!!!!!
8 0
3 years ago
What is the magnitude of vector w, if w = u – v?
pav-90 [236]

Answer: B- |W|= 2.95

3 0
3 years ago
Other questions:
  • Predict the number of pancakes that would have 48 chocolate chips
    8·1 answer
  • On which number line do the points represent -5 1/2 and +3?
    12·1 answer
  • Determine whether the function f(x) = -6x^2 - 5 is a quadratic function<br> A) Yes<br> B) No
    15·1 answer
  • Please help<br><br> find the value of x in the given ratio.<br><br> 2/3=x/15
    12·1 answer
  • Please help with this ASAP. image below
    7·2 answers
  • If g(x) = -2x - 2, find g(-2x).​
    6·1 answer
  • A department store buys 500 shirts at a cost of $3,500 and sells them at a selling price of $10 each. Find the percent markup.​
    11·1 answer
  • A car travels 384 kilometers in 4 hours. (with a constant speed) how much time will it take traveling at 144 kilometers?
    9·2 answers
  • Please please help me with this question please
    8·2 answers
  • Demarcus has to wrap a gift for his friend's birthday party. The gift is in a rectangular box with the dimensions shown below. H
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!