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3 years ago

Which of the following is a correct interpretation of the expression -3 - 5−3−5minus, 3, minus, 5?

Mathematics

1 answer:

mariarad [96]3 years ago

7 0

Answer:

-24

Step-by-step explanation:

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Describe the x-values at which f is differentiable.

Sedbober [7]

Answer:

Step-by-step explanation:

Differentiability at a point implies no sudden changes in the slopes from one side to the other; that is, the derivative must have the same value.

Differentiating x^2 - 6 and 6 - x^2, we get 2x = -2x, whose only solution is zero (0). The two halves of the given function have the same slope (0) at x = 0.

5 0

3 years ago

A fair die is rolled nine times. What is the probability that

Lisa [10]

Answer:

The answer is 46/512 = 0.08984375

Step-by-step explanation:

In this question, success means to get an odd number on rolling a die.

The probability of success p = 3/6 = 1/2

So p = 1/2

Now lets find probability of failure q

q = 1 - p = 1 - 1/2 = 1/2

So q = 1/2

Let X = x denotes the number of success in n trials.

So X is a Binomial Random Variable

Which has the following parameters:

n = 9

as the fair die is rolled nine times and

p = 1/2

Now the Probability of x success out of n trials P( X = x) is:

P(X = x) = p(x) = nCx pˣ , qⁿ⁻ˣ , x= 0,1,2,...,9

P(X = x) = p(x) = nCx (1/2)⁹ = ₉Cₓ (1/2)⁹ = ₉Cₓ /512

Since the required probability is P (X < 3) So

P(X < 3) = P(X = 0) + P( X = 1) + P(X = 2)

= 1 / 512 {₉C₀ + ₉C₁ + ₉C₂} nCr = n! / r! * (n - r)!

= 1 / 512{ (9! / 0! * (9 - 0)!) + (9! / 1! * (9 - 1)!) + (9! / 2! * (9 - 2)!) }

= 1 / 512 { 1 + 9 + 36 }

= 46 / 512 = 0.08984375

So the required probability is 46/512

5 0

3 years ago

Some automobiles have four-button locks. To gain entry, push each of the four buttons, in a particular order, to unlock the door

bogdanovich [222]

Answer:

their are five diffreant codes.

Step-by-step explanation:

7 0

3 years ago

PLZ help mw with this quston

vodka [1.7K]

It’s 52.29 kinda easy...

7 0

3 years ago

I just need an explanation on why I was wrong and why the correct answer is correct

Nookie1986 [14]

Answer:

Step-by-step explanation:

Definition of: Coefficient

A number used to multiply a variable.

Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient.

Variables with no number have a coefficient of 1.

Example: x is really 1x.

coefficients:

3x⁴+ 5x² + 1x

sum of the coefficients:

3 + 5 + 1

8 + 1

4 0

3 years ago