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4 years ago

Multiply. (r + 7)(r - 7)

Mathematics

2 answers:

Lynna [10]4 years ago

7 0

R squared-7r+7r-49
Simplified as r squared-49

Naddika [18.5K]4 years ago

5 0

The screenshot below will give you the answer and the explanation

Hope I helped :)

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First, decide whether the distribution is a discrete probability distribution, then select the reason for making this decision.

Lyrx [107]

It is not a probability distribution, as the sum of the probabilities is more than 1, thus, the correct option is No, considering that:

c) Since the sum of the probabilities is not equal to 1.

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For the sequence $(x, P(X = x))$ representing a probability distribution, it is needed that:

All probabilities are between 0 and 1, that is, for all values of x, $0 \leq P(X = x) \leq 1$ .
The sum of all probabilities is 1, that is: $\sum_{i = 1}^n P(x_i) = 1$

In this problem, the sum of the probabilities is:

$\sum_{i = 1}^n P(x_i) = 0.39 + 0.69 + 0.12 = 1.20$

Sum is not 1, thus it is not a probability distribution, and the correct option is:

c) Since the sum of the probabilities is not equal to 1.

A similar problem is given at brainly.com/question/24858659

8 0

3 years ago

Gavin drank 3/4 of a liter of orange juice from from a container, which was 3/8 of the orange that was originally in the contain

kow [346]

Answer:

2 liters of orange juice

Step-by-step explanation:

We know that Gaby drank 3/4 liters of juice

3/4 liters is the same as saying 0.75 liters

3/4 = 0.75

if 0.75 is 3/8 of the container we just have to divide it by 3 and multiply it by 8 and so we will get the liters of the container

(0.75/3) * 8 =

0.25 * 8 =

then initially in the container there were 2 liters of orange juice

3 0

3 years ago

Y = 6 is the equation of a

Olegator [25]

Answer:

vertical line

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The average heights of four samples taken from a population of students are shown in the table. Which of these is most likely cl

timofeeve [1]

Answer:

A. 61

Step-by-step explanation:

Hope this helps, have a great day!

8 0

3 years ago

30 POINTS! Use the graph of f to estimate the local maximum and local minimum.

nadya68 [22]

$y_{min}=-1\ for\ x=(2k+1)\pi\ for\ k\in\mathbb{Z^-}\cup\{0\}\ \vee\ x=\dfrac{3\pi}{2}+2k\pi\ for\ k\in\mathbb{Z^+}\cup\{0\}$

$y_{max}=1\ for\ x=2k\pi\ for\ k\in\mathbb{Z^-}\cup\{0\}\ \vee\ x=\dfrac{5\pi}{2}+2k\pi\ for\ k\in\mathbb{Z^+}\cup\{0\}$

7 0

3 years ago