Three swimmers competed in a 50 m freestyle race. A description of their swimming speeds is given. Order the

PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

Alex777 [14]

Answer:

Its D

Step-by-step explanation:

x = 1

x = -1

x= 0.0000 - 3.0000 i

x= 0.0000 + 3.0000 i

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2" was replaced by "x^2". 4 more similar replacement(s).

Step by step solution :

Step 1 :

Equation at the end of step 1 :

((((((x6)-(2•(x5)))+(9•(x4)))-24x3)-x2)+18x)-9 = 0

Step 2 :

Equation at the end of step 2 :

(x6)-(2•(x5)+(32x4)-24x3)-x2)+18x)-9 = 0

Step 3 :

Equation at the end of step 3 :

(x6)-2x5)+32x4)-24x3)-x2)+18x)-9 = 0

4 0

3 years ago

From a standard deck of cards a card will be chosen at random. What will be the probability the card is a 2

11Alexandr11 [23.1K]

Answer:

1/64 chance

Step-by-step explanation:

please leave me a brainliest

4 0

3 years ago

I NEED HELP PLEASE, THANKS! :)

saw5 [17]

Hey there! :)

Answer:

First option: As x⇒ ∞ f(x) ⇒ -∞. As x⇒ -∞ f(x) ⇒ ∞.

Step-by-step explanation:

Rearrange the equation:

f(x) = -x³ - 2x² + 1

This is a negative cubic function. The function decreases over the interval

(-∞, ∞). Therefore:

As x⇒ ∞ f(x) ⇒ -∞.

As x⇒ -∞ f(x) ⇒ ∞.

This is the first option.

4 0

3 years ago

The caller times at a customer service center has an exponential distribution with an average of 22 seconds. Find the probabilit

jenyasd209 [6]

Answer:

The probability that a randomly selected call time will be less than 30 seconds is 0.7443.

Step-by-step explanation:

We are given that the caller times at a customer service center has an exponential distribution with an average of 22 seconds.

Let X = caller times at a customer service center

The probability distribution (pdf) of the exponential distribution is given by;

$f(x) = \lambda e^{-\lambda x} ; x > 0$

Here, $\lambda$ = exponential parameter

Now, the mean of the exponential distribution is given by;

Mean = $\frac{1}{\lambda}$

So, $22=\frac{1}{\lambda}$ ⇒ $\lambda=\frac{1}{22}$

SO, X ~ Exp( $\lambda=\frac{1}{22}$ )

To find the given probability we will use cumulative distribution function (cdf) of the exponential distribution, i.e;

$P(X\leq x) = 1 - e^{-\lambda x}$ ; x > 0

Now, the probability that a randomly selected call time will be less than 30 seconds is given by = P(X < 30 seconds)

P(X < 30) = $1 - e^{-\frac{1}{22} \times 30}$

= 1 - 0.2557

= 0.7443

7 0

3 years ago

A cake mix calls for these ingredients. 2 cups of sugar 7 cups of flour 3 cups of milk 1 cup of oil Write the ratios of sugar to

Rashid [163]

Answer:

milk to oil - correctly shows ratio 3:1

7 0

3 years ago

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