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rewona [7]
3 years ago
12

Prove that the difference between 9th square number and 5th square number is a multiple of 8?​

Mathematics
1 answer:
Yuki888 [10]3 years ago
8 0

Answer:

Step-by-step explanation:

9th square number = 81

5th square number=25

81-25=56

56 is a multiple of 8 as 8 x 7=56

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goldenfox [79]
39.7 times 100, or:

3970 inches squared
7 0
3 years ago
The sum of two numbers is odd. Can the quotient of the two numbers be an odd number?
Natalka [10]

Answer: No.

Step-by-step explanation:

I guess that here we have the statement:

If the sum of two numbers is odd----> can their quotient be an odd number?

first, for n an integer number, we have that:

an odd number can be written as 2n + 1

an even number can be written as 2n.

The sum of two numbers is only odd if one of them is odd and the other even.

Then we have a number that is 2n and other that is 2k + 1, for n and k integer numbers.

Now, let's see if the quotient can also be an odd number.

One way to think this is:

There is an odd number such that when we multiply it by another odd number, the result is an even number?

no, and i can prove it as:

let 2k + 1 be an odd number, and 2j + 1 other.

the product is:

(2k + 1)*(2j + 1) = 2*(2*k*j + k + j) + 1

and as k and j are integers, also does 2*k*j + k + j, so:

2*(2*k*j + k + j) + 1 is an odd number.

This says that the product of two odd numbers is always odd, then we never can have that the quotient between an even number and an odd number is odd.

4 0
3 years ago
A quadrilateral has congruent diagonals. It is probably a( n) ______.
____ [38]
<span>A quadrilateral has congruent diagonals. It is probably a <u>Square</u></span>
7 0
3 years ago
Given the following perfect square trinomial, fill in the missing term. <br><br> x2 − 16x + ____
pychu [463]
The pattern is:
( a - b )² = a² - 2 a b + b² ( square of last term of binomial - the missing term)
x² - 2 · 8 · x + 8² = x² - 16 x + 64 = ( x - 8 )²
The missing term is: 64
6 0
3 years ago
Read 2 more answers
How do u estimate 5004​
Brrunno [24]

Answer:

5004 \approx5000

3 0
3 years ago
Read 2 more answers
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