1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
boyakko [2]
3 years ago
8

An experiment involves tossing a die. these are some of the events:

Mathematics
2 answers:
Lena [83]3 years ago
8 0

"Tossing a die" is assumed to mean choosing a random face of a cube with faces numbered 1 through 6 such that the probability of choosing any particular face (number) is 1/6.

Event <em>a</em> is "observe a 2". Event <em>b</em> is "observe an even number". The event "<em>a</em> and <em>b</em>" is "observe 2 and an even number". This matches precisely the description for event <em>a</em>. In other words

... <em>a</em> and <em>b</em> = <em>a</em>

... p(<em>a</em> and <em>b</em>) = p(<em>a</em>) = p(choosing 2) = 1/6

8090 [49]3 years ago
5 0

Answer:

<u>Option-</u> B

  • An experiment involves tossing a die. these are some of the events during which we can be able to observe an even number.                                                                                                                      

Step-by-step explanation:

  • It is more obviously to know that there will be six sides for us to observe and each time we will get an even number to observe during the process.So, it all goes with the mechanisms of the probability that are taken under considerations when we speak about such events to happen.
You might be interested in
How does moving the place of a digit change its value
AlexFokin [52]
In the familiar decimal number system that we use every day, moving the place
of a digit changes its value by a power of 10 .

In a system of numbers to any other base, moving the place of a digit changes
its value by a power of whatever the base of that number system is.
6 0
3 years ago
Roberto rowed 20 miles downstream in 2.5 hours. The trip back, however, took him 5 hours. Find the rate that Roberto rows in sti
almond37 [142]

Answer:

<em>Roberto's speed in still water is 6 miles/hour and the river speed is 2 miles/hour</em>

Step-by-step explanation:

<u>Relative Speed</u>

When a body is moving at a constant speed v, the distance traveled in a time t is:

d=v.t

When Roberto rows downstream, his speed in still water is added to the speed of the water, making it easier to travel the required distance.

When Roberto rows upstream, his speed in still water is affected by the speed of the water, both are subtracted and the required distance is covered in more time.

Let's call

x = Roberto's rowing speed in still water

y = Speed of the river current

The speed when rowing downstream is x+y, thus the distance traveled is

d=(x+y).t_1

Where t1=2.5 hours. Substituting values:

20=(x+y)*2.5

Rearranging, we find the downstream equation:

2.5x+2.5y=20\qquad[1]

The speed when rowing upstream is x-y, and the distance traveled is

d=(x-y).t_2

Where t2=5 hours. Substituting values:

20=(x-y)*5

Rearranging, we find the upstream equation:

5x-5y=20\qquad[2]

Multiplying [1] by 2:

5x+5y=40

Adding this equation to [2]:

10x=60

Solving:

x=60/10=6

Dividing [2] by 5:

x-y=4

Solving for y

y=x-4=6-4=2

Thus, Roberto's speed in still water is 6 miles/hour and the river speed is 2 miles/hour

3 0
3 years ago
Write 19/20<br> as a percentage.
PIT_PIT [208]

Answer:

95%

Step-by-step explanation:

\frac{19}{20} x 5 = \frac{95}{100}

\frac{95}{100} = 0.95

0.95 = 95%

4 0
3 years ago
What is the directrix of the following graph?<br> X = -3<br> Y= 3<br> Y = -3<br> X = 3
kaheart [24]

Answer:

y = 3

Step-by-step explanation:

The vertex of the parabola is (1,4) and the axis of the parabola is parallel to the positive y-axis.

So, the equation of the parabola will be (x - 1)² = 4a(y - 4) ....... (1)

Now, we have to get the value of a since the equation id the directrix is y = 4 - a.

Now, the parabola passes through the point (3,5) {Obtained from the graph).

Therefore, from equation (1), we get, 2² = 4a × 1, ⇒a = 1

Therefore, the equation of the directrix is y = 4 - 1 = 3. (Answer)

7 0
3 years ago
A new club sent out 180 coupons to boost sales for next year's memberships. They provided 4 times as many to potential members t
tigry1 [53]

Answer:

5 coupons each

Step-by-step explanation:

180 ÷ 36 = 5

yep

5 0
2 years ago
Other questions:
  • Which of the following is a typical cost associated with renting?
    9·1 answer
  • A box contains three plain pencils and 5 pens. A second box contains three colored pencils and three crayons. One item from each
    15·1 answer
  • 5(k+5)+4&lt;21+6k what is the answer
    14·1 answer
  • Simplify the expression x^2 + 3x + 4
    7·2 answers
  • A TV has an original price of $599. Enter the new price after the given
    5·1 answer
  • Jillene spends $240 on a new business the first month. If she spends 24% more each month, approximately how much will she spend
    11·1 answer
  • The ball park is selling a hamburger combo. At the end of the day, they collected $103.95. If a total of 21 hamburger combos wer
    5·1 answer
  • 11 4/7 as an improper fraction​
    10·2 answers
  • Solve this: - 6 n = 30​
    14·2 answers
  • If 3y + 3 = y + 7 is the same as y + y +y + 1 + 1 + 1 = y + 1 + 1 + 1 + 1+ 1 + 1 + 1, then how can we isolate 'y' without disrup
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!