3 years ago

I really need help please

Mathematics

1 answer:

Vsevolod [243]3 years ago

6 0

yes if x squared = 25

and x = 5

that is correct because

5 squared = 25

5 x 5 = 25

x time x = x squared

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The population, P in thousands of a resort community is shown by

Elena-2011 [213]

Answer:

t ≤ 4.24

Step-by-step explanation:

P(t) ≥ 40000 implies

500t/(2t²+9) ≥ 40000

Multiplying through by t², we have

500t ≥ 40000(2t²+9)

500t/40000 ≥ 2t²+9

Collecting like terms

0.0125t ≥ 2t²+9

0 ≥ 2t²+ 9 - 0.0125t

2t²+ 9 - 0.0125t ≤ 0

2t²- 0.0125t + 9 ≤ 0

Using the quadratic formula,

$t = \frac{-(-0.0125) +/-\sqrt{(-.0125)^{2} - 4 X 2 X 9} }{2 X 2} \\= \frac{0.0125 +/-\sqrt{(0.00015625 - 288} }{4}\\= \frac{0.0125 +/-\sqrt{-287.9998} }{4}\\= \frac{0.0125 +/-16.97i }{4}\\=0.00313 + 4.24i or 0.00313 - 4.24i$

The factors of the equation are (t - 0.00313 -4.24i) and (t - 0.00313 + 4.24i)

So, (t - 0.00313 -4.24i)(t - 0.00313 + 4.24i) ≤ 0

(t - 0.00313)² - 4.24² ≤ 0

(t - 0.00313)² ≤ 4.24²

taking square-root of both sides,

√(t - 0.00313)² ≤ √4.24²

t - 0.00313 ≤ 4.24

t ≤ 4.24 + 0.00313

t ≤ 4.24313 ≅ 4.24

t ≤ 4.24

6 0

3 years ago

100 points

mafiozo [28]

Hope that help:))

Thank u

8 0

3 years ago

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Explanation^^^^^

it’s 17 heads!!

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Answer:

A) 63

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4 years ago

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Answer:

3/16

Step-by-step explanation:

because you have a chance of 3 blue marbles out of 3+4+4+5 which is equal to 16

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4 years ago