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3 years ago

I really, really need help with this! I'm so stuck!!

Mathematics

2 answers:

aleksklad [387]3 years ago

6 0

I’d say 174 cm2, but I just did it off the top of my head

vampirchik [111]3 years ago

3 0

I got 126m^2 but not sure if I’m right

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Factorize A 3x⁴-3 B 16y²-1 C x⁵-4x³

Y_Kistochka [10]

Answer:

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3 years ago

Write four consecutive numbers with a mean and medium of 14.5

Ivanshal [37]

Answer:

13, 14, 15, 16

Step-by-step explanation:

Call the first number n. Then the next three consecutive numbers (assuming integers) are n + 1, n + 2, n + 3.

The mean is the total of the numbers divided by how many there are.

$\frac{n+(n+1)+(n+2)+(n+3)}{4}=14.5$

Simplify and multiply by 4.

$4n+6=58\\4n=52\\n=13$

The first number is 13.

The median is 14.5, halfway between the "middle" numbers 14 and 15. This is just a check; no additional equation is necessary.

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3 years ago

How to solve this Pythagorean Theorem.

miskamm [114]

Oh, this is really easy!
Okay so the formula for the pythagorean theorem is a²+b²=c²
So it doesnt really matter whats a or b
So take 21²+15²=c²
That ends up being 441+225=c²
so next take 441+225 and that equals 666 then you have to find the square root so the square root of 666 is 25.81

S the answer is 25.81

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3 years ago

Is 15 (-5, -5) a solution of y2 +2 +42 just say yes or no

notka56 [123]

Answer:

Step-by-step explanation:

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3 years ago

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