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3 years ago

Solve for the roots in simplest form using the quadratic formula:

Mathematics

1 answer:

Softa [21]3 years ago

3 0

Step-by-step explanation:

4x² - 12x + 17 = 0

i is an imaginary number and it equals √-1, and you usually put it when the number under the root is negative.

So √-5 = √5i and √-4 = 2i

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The light intensity I (in lumens) at a depth of x feet in Lake Elizabeth is given by the formula log (StartFraction Upper I Ove

antiseptic1488 [7]

Answer:

The light intensity at a depth of 24 feet is 3.0143 lumens.

The light intensity will be 7 lumenus at the depth of 9.3732 feet approximately.

Step-by-step explanation:

Consider the provided formula.

$log(\frac{I}{12})=-0.025x$

Where I is the intensity of light and x is the depth.

Part (A) Find the light intensity at a depth of 24 feet.

Substitute x=24 in above formula.

$log(\frac{I}{12})=-0.025(24)$

$log(\frac{I}{12})=-0.6$

$\frac{I}{12}=10^{-0.6}$

$\frac{I}{12}=0.2512$

$I=3.0143$

Hence, the light intensity at a depth of 24 feet is 3.0143 lumens.

Part (B) At what depth is the light intensity 7 lumens

Substitute I=7 in above formula.

$log(\frac{7}{12})=-0.025x$

$-0.23433=-0.025x$

$0.23433=0.025x$

$x=\frac{0.23433}{0.025}$

$x=9.3732$

Hence, the light intensity will be 7 lumenus at the depth of 9.3732 feet approximately.

3 0

3 years ago

120% of it is 24. What is the number

leonid [27]

Answer:

Step-by-step explanation:

1.2x = 24

x = 20

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3 years ago

Determine whether the underlined value is a parameter or a statistic. The average score for a class of 28 students taking a calc

Veronika [31]

Answer:

Option D is right

Step-by-step explanation:

Given that the average core for a class of 28 students taking a calculus midterm exam was 72%

Parameters are numbers that summarize data for an entire population. Statistics are numbers that summarize data from a sample, i.e. some subset of the entire population.

From the above we see that the measurements pertaining to samples are statistics.

Thus 72 is a statistic

Option D is right

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3 years ago

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Good morning everyone hope ur having a great day. If any of u could you please check out my questions I have a very important te

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Good morning to you too! I will check them and try my best to answer them. If I cannot, I am sorry. Have a nice day! I hope you pass!

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Make a Markov chain model of a poker game where the states are the number of dollars a player has. With probability .3 a player

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4 years ago