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3 years ago

F(x) -x^2 -2x+13 help

Mathematics

2 answers:

Sedaia [141]3 years ago

5 0

-3 hope i helped :) !!!!

melamori03 [73]3 years ago

4 0

Answer:

x =1 or -3

Step-by-step explanation:

10 = -x^2 - 2x + 13

when you solve that equation^ you get your answer to be either 1 or -3. Since -3 is a negative number, I would just type in x = 1

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(n/2)^2 + (n/2)^2 = 16 (simplify and get (n))

mote1985 [20]

(¹/₂n)² + (¹/₂n)² = 16
¹/₄n² + ¹/₄n² = 16
¹/₂n² = 16
2(¹/₂n²) = 2(16)
n² = 32
√n² = √32
n = ±4√2

4 0

4 years ago

Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage r

postnew [5]

Answer: -34738.4259228

Step-by-step explanation:

It’s a decrease because your dividing 1600e -0.1252

5 0

3 years ago

When the Bucks play Chiefs at football, the probability that the Chiefs, on present form, will win is 0.56. In a competition, th

Tom [10]

Answer:

The probability that Swallows will win the trophy is 0.8064

The probability that Rucks will win the trophy is 0.1936

Step-by-step explanation:

For each game, there are only two possible outcomes. Either the Swallows win, or they do not. The probability of them winning a game is independent of any other game, which means that the binomial probability distribution is used.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Probability the Swallows wins is 0.56

This means that $p = 0.56$

2 games:

This means that $n = 2$

The probability that Swallows will win the trophy is

Probability they win at least one game, so:

$P(X \geq 1) = 1 - P(X = 0)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{2,0}.(0.56)^{0}.(0.44)^{2} = 0.1936$

Then

$P(X \geq 1) = 1 - 0.1936 = 0.8064$

0.8064 = 80.64% probability the Swallows win the trophy and 0.1936 probability that the Rucks win the trophy.

5 0

3 years ago

The exponential function f intersects the x-axis at the point (2,0) and intersects the y-axis at the point (0,-5.25) If g(x) = 3

Ivanshal [37]

The rate of change of g is given by its gradient, which is 3.

The average rate of change of f in [0, 2] can be calculated by taking:

$\frac{0 - (-5.25)}{2 - 0} = \frac{5.25}{2} = 2.625$

So, the average rate of change of f is less than the average rate of change of g in the interval [0, 2].

Statement 2 is correct.

3 0

4 years ago

What are the zeros of this function?

son4ous [18]

Answer:

4 and 6

Step-by-step explanation:

These are the points in which y=0

6 0

3 years ago