3 years ago

Is the sum of two consecutive numbers is always odd?

Mathematics

1 answer:

Gemiola [76]3 years ago

5 0

Answer:

Yes

Step-by-step explanation:

if you add two consecutive numbers, the answer is always an odd number. So a sum like this must have an odd number as a factor again.

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What is commutative property in rational number ? please explain.

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Answer:

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Hey mate

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Step-by-step explanation:

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3 years ago

What number should be added to 77 to make the sum 0?

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3 years ago

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Solve this application problem using a system of equations: The Bright College footballteam scored 80 times last season, some on

Goryan [66]

Answer:

$\large \boxed{\sf \ \ 69 \ \textbf{touchdowns } 11 \ \textbf{field goals } \ }$

Step-by-step explanation:

Hello,

Touchdown is 7 points, field goals is 3 points

Let's note a the number of touchdowns and b the number of field goals, we can write

(1) a + b = 80

(2) 7a + 3b = 516

(2) - 3*(1) gives

7a + 3b - 3(a + b) = 516 - 3*80

<=> 7a + 3b -3a - 3b = 516 - 240 = 276

<=> 4a = 276

<=> $a=\dfrac{276}{4}=69$

And then from (1) b = 80 - 69 = 11

Hope this helps

4 0

3 years ago