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3 years ago

Which equation can be rewritten as x + 4=x2 assume x>0

Mathematics

1 answer:

antoniya [11.8K]3 years ago

5 0

I'm guessing that x2 is an x to the power of 2, so u can rewrite that as:

x^2 - x - 4

from there you can use completing the square, quadratic function, or factoring.

If the x2 is supposed to be 2x then it would just be as follows:

x - 4

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What is the value of x in the right triangle below? Show your work and round your answer to the nearest hundredth.

navik [9.2K]

The length of the hypothenuse or the value of x is equal to 19.53

Data;

hypothenuse = x
adjacent = 11.2
opposite = 16

<h3>Pythagoras's Theorem</h3>

To solve this problem, we have to use Pythagoras's theorem which is used to find the missing side in a right angle triangle if we have at least two sides.

The formula for this is

$x^2 = y^2 + z^2\\$

Let's substitute the values and solve for the missing side

$x^2 = 16^2 + 11.2^2 \\x^2 = 256 + 125.44\\x^2 = 381.44\\x = \sqrt{381.44} \\x = 19.53$

The length of the hypothenuse or the value of x is equal to 19.53

Learn more Pythagoras theorem here;

brainly.com/question/3317136

6 0

2 years ago

Situation D: Suppose that, in a one-minute period during an electrical storm, the number of lightning strikes on a radar antenna

Crank

Answer:

21.77% probability that the antenna will be struck exactly once during this time period.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

In this question:

$\mu = 2.40$

Find the probability that the antenna will be struck exactly once during this time period.

This is P(X = 1).

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 1) = \frac{e^{-2.40}*2.40^{1}}{(1)!} = 0.2177$

21.77% probability that the antenna will be struck exactly once during this time period.

3 0

3 years ago

Can someone help me do these it’s really hard

Elena L [17]

Answer:

40 cubes

Step-by-step explanation:

multiply side lengths or the prism by 2, then solve for volume

2.5 * 2 = 5

2 * 2 = 4

1 * 2 = 2

5 * 4 * 2 = 40

4 0

3 years ago

A black mamba snake crawls along the ground at a rate of 10 miles per hour. Convertthis rate to kilometers per hour. (1 mile = 1

Mashcka [7]

Answer:

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Step-by-step explanation:

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2 years ago

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2 years ago

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