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IrinaVladis [17]
3 years ago
8

The sum of the squares of 4 consecutive integers is an even integer.

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0

Answer:

yes

Step-by-step explanation:

Let's call the first integer n and let's compute.n^2 + (n+1)^2 + (n+2)^2 +(n+3)^2 = \\n^2 + \\n^2+2n+1 + \\\ n^2+4n+4 + \\\ n^2+6n+9+\\\ n^2+8n+16  =\\4n^2+20n +30 = 2 (2n^2+10n+15)

Which is indeed of the form 2(something), so it is even.

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a recipe calls for 3 ounces of flour for every 2 ounces of sugar. Find the constant of proportionality.
Ket [755]
3:2 


for every 3 ounces of flour, you need 2 ounces of sugar
7 0
3 years ago
Researchers recorded that a certain bacteria population declined from 800,000 to 500,000 in 6 hours after the administration of
kupik [55]

Answer:

We can assume that the decline in the population is an exponential decay.

An exponential decay can be written as:

P(t) = A*b^t

Where A is the initial population, b is the base and t is the variable, in this case, number of hours.

We know that: A = 800,000.

P(t) = 800,000*b^t

And we know that after 6 hours, the popuation was 500,000:

p(6h) = 500,000 = 800,000*b^6

then we have that:

b^6 = 500,000/800,000 = 5/8

b = (5/8)^(1/6) = 0.925

Then our equation is:

P(t) = 800,000*0.925^t

Now, the population after 24 hours will be:

P(24) = 800,000*0.925^24 = 123,166

5 0
3 years ago
12. Write the first five terms of two different sequences that have 10 as the
kodGreya [7K]

Answer:

a)  The arithmetic sequence with common difference 2 that has 8 as the first term.

b) The arithmetic sequence of common difference -5 and first term 15.

Step-by-step explanation:

Let's use for example the arithmetic sequence with common difference 2 that has 8 as the first term. Then the first two terms of this sequence are:

8, and (8+2) = 10 Therefore the second term is 10.

Another arithmetic sequence of common difference -5 and first term 15. The firs two terms of this sequence are:

15, and  (15 - 5)  = 10. Therefore again a 10 as second term.

6 0
3 years ago
What is the equivalent of <br>2/3x -9 - 2x + 2 = 1 after combining like terms?​
elena-s [515]

Answer:

5

Step-by-step explanation:

5 0
4 years ago
Name a number that is an integer, but not whole number.
tekilochka [14]

Answer:

-1

Step-by-step explanation:

All negative integers are not whole numbers

4 0
3 years ago
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