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dybincka [34]
3 years ago
9

20 question ach containing three answers quiz probability of getting no points? worksheet

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
5 0
The probability of getting no points on any given question is 2/3, so for 20 independent questions, it is (2/3)^20 ≈ 3.007*10^-4.
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Plz help ill give 17 points thx
Blizzard [7]

Answer:

1:6 = 7:42

Step-by-step explanation:

6 0
2 years ago
What is the equation in slope-intercept form of a line that is perpendicular to y=2x+2 and passes through the point (4, 3)?
Ostrovityanka [42]
<h2>Answer:   y = - ¹/₂ x + 5 </h2>

<h3>Step-by-step explanation: </h3>

<u>Find the slope of the perpendicular line</u>

When two lines are perpendicular, the product of their slopes is -1. This means that the slopes are negative-reciprocals of each other.

                 ⇒  if the slope of this line = 2     (y = 2x + 2)

                      then the slope of the perpendicular line (m) = - ¹/₂

<u>Determine the equation</u>

We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line:  

                               ⇒  y - 3 =  - ¹/₂  (x - 4)

We can also write the equation in the slope-intercept form by making y the subject of the equation and expanding the bracket to simplify:

                             since   y - 3 =  - ¹/₂  (x - 4)

                                              y = - ¹/₂ x + 5   (in slope-intercept form)

8 0
2 years ago
Help with this math question
Zielflug [23.3K]

The answer is: 2 seconds

The explanation for this answer is shown below:

1. By definition, the amount of second required for the pendulum to move from its resting position and return, is the period.

2. As you can see in the graph attached in the exercise, the wave interval is repeating every two units of x (or 2 seconds).

3. Therefore, the period is 2 seconds.

7 0
3 years ago
(Please i need help) The expression p - 0.15p can be used to calculate the final cost of an item that has a price of p and is
garri49 [273]

Answer:

Final cost of the item is $19.55

Step-by-step explanation:

Expression representing the final cost of an item with original price = $p and discount = 15% will be,

Final cost = (p - 0.15p)

If the original price p = $23

By substituting p = 23 in the expression given,

Final cost after discount = 23 - (0.15)23

                                         = 23 - 3.45

                                         = $19.55

Therefore, final cost of the item is $19.55

7 0
3 years ago
This graph shows how the length of time a kayak is rented is related to the
san4es73 [151]

Answer:

option D.

Step-by-step explanation:

rate \: of \: change \:  =  \frac{change \: in \: y}{change \: in \: x}

let's take any point on the graph. let's say (2, 16)

and one point we know is (0, 0)

rate \: of \: change =  \frac{16 - 0}{2 - 0}

= 16($) / 2 (hrs)

= 8 $/ hrs

that is option D.

5 0
3 years ago
Read 2 more answers
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