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3 years ago

Evaluate p(-2)=x^3-4x-5

Mathematics

2 answers:

Pani-rosa [81]3 years ago

3 0

Step-by-step explanation:

$p(x) = {x}^{3} - 4x - 5 \\ p( - 2) = {( - 2)}^{3} - 4( - 2) - 5 \\ = - 8 + 8 - 5 \\ = - 5$

Goshia [24]3 years ago

3 0

Answer:

The answer would be -5.

Step-by-step explanation:

First I plugged in negative 2 for every x in the equation, which gives me:

p(-2) = (-2)³ - (4(-2)) - 5.

We solve for the exponents first, which gives us a total of -8 because we are multiplying -2 by itself 3 times. Then we multiply 4 and -2, which gives us negstive 8. However, the first -8 and the second -8 cancel out because the equation has a - sign in between the two, leaving us with only -5. -5 is the answer.

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Step-by-step explanation:

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3 years ago

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Maksim231197 [3]

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3 years ago

Solve the following proportion 12/25=x/88

Fittoniya [83]

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3 years ago

The value of the digit 8 in this number is 8 the value of the digit 7 in this number is not 700

In-s [12.5K]

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3 years ago

Larry reads that 1 out of 4 eggs contains salmonella bacteria, so he never uses more than 3 eggs in cooking. If eggs do or don't

aleksley [76]

Answer:

57.8125% or approx. 57.8%

Step-by-step explanation:

There is a 1/4, or 25%, or 0.25 chance that an egg has salmonella.

Thus, there is a 75%, or 0.75 chance that an egg DOESN'T contain salmonella.

Let's find the probability that all 3 of Larry's eggs are free from salmonella. Larry would have to hit that 75% chance 3 times in a row. The chance of that happening is:

0.75 * 0.75 * 0.75 = $0.75^3$ = 0.421875

From this, we can deduce that if there is a 0.421875 (42.1875%) chance that all eggs are safe to eat, there must be a...

1 - 0.421875 = 0.578125

...0.578125 (57.8125%) chance that 1 or more of Larry's eggs do have salmonella.

Answer: approx. 57.8% or 57.8125%

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3 years ago