3 years ago

Question 9

Mathematics

1 answer:

netineya [11]3 years ago

7 0

Answer: 5

Step-by-step explanation: divion

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An oil tanker breaks apart and starts leaking. As time goes on, the rate at which the oil is leaking out will diminish. Suppose

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Answer:

62.77 million gallons

Step-by-step explanation:

Given,

The function that shows rate of leaking oil per minute in after t hours,

$R(t) = \frac{0.7}{1+t^2}$

∵ 1 hour = 60 minutes ⇒ 3 hours = 180 minutes,

Hence, the quantity of oil leaked out in the first 3 hours,

$V(t) = \int_{0}^{180} R(t) dt$

$=\int_{0}^{180} \frac{0.7}{1+t^2} dt$

$=0.7 \int_{0}^{180} \frac{dt}{1+t^2}$

$=0.7[tan^{-1}(t)]_{0}^{180}$

$=0.7(tan^{-1}(180) - tan^{-1} (0))$

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You have a 10kg bag of sand. the mass of a grain of sand is about 10 to the -3 power gram. about how many grains of sand are in

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N = 10^3 / 10^-3 = 10^6 = 1 million

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4 years ago

What is the value of the expression -1/2 + 2.2? ***HINT*** Change your

alina1380 [7]

Answer:

1.7

Step-by-step explanation:

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What is the discrimination of the quadratic equation 8x^2-2x-1=0

ELEN [110]

$D=b^2-4ac\\D=(-2)^2-4(8)(-1)\\D=4+32\\D=36$

For another information, when D > 0, there are 2 real roots.

When D = 0, there is only one real root.

And when D < 0, there are no real roots (also known as imaginary.)

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Zina [86]

Answer:

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Step-by-step explanation:

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