3 years ago

12+4y^2-7 please help i will give brainliest

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

8 0

Answer: 4 2^ + 5

Step-by-step explanation:

;w;

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With no air resistance, the time, t, it takes an object to fall h feet, can be determined by the equation t = square root of h/4

34kurt

Answer:

10,000 ft

Step-by-step explanation:

We can solve the given relation for h:

$t=\dfrac{\sqrt{h}}{4}\\\\4t=\sqrt{h}\\\\h=16t^2$

Putting t=25 into this formula, we get ...

h = 16(25²) = 10,000

With no air resistance the object will take 25 seconds to fall from 10,000 feet.

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A pharmacist has 80 milliliters of a 25% saline solution. Which expression can be used to find the percentage concentration of t

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0.25 and y=80.01%. And the rest are wrong.

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3 years ago

Factor completely...................

defon

Answer:

Final answer is A. $9(3x+1)(3x-2)$ .

Step-by-step explanation:

Given expression is $81x^2-27x-18$ .

$81x^2-27x-18$

$=9(9x^2-3x-2)$

We can factor that by splitting middle term into two parts then do grouping as shown below:

$=9(9x^2-6x+3x-2)$

$=9(3x(3x-2)+1(3x-2))$

$=9(3x+1)(3x-2)$

Which correctly matches with choice A. $9(3x+1)(3x-2)$ .

Hence final answer is A. $9(3x+1)(3x-2)$ .

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3 years ago

Linnea's company's revenue in 2017 is 36/25 of its revenue in 2016.

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Answer:

144%

Step-by-step explanation:

36 divided by 25 is 1.44 and to change it it percent u just move the decimal point.

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Joan pays $38.17 in cash.

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