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2 years ago

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Multiple choice. You take a quiz with 6 multiple-choice questions. After you studied, you estimated that you would have about an

80% chance of getting any individual question right. What are your chances of getting them all right

1 answer:

Dahasolnce [82]2 years ago

6 0

Answer:

.262144, or about 26%

Step-by-step explanation:

Use what people call the Multiplication Principle. If there are two independent events--the outcome of one does not affect the outcome of the other--multiply their probabilities to find the probability of both occurring.

The questions are independent -- answering one question does not affect the answer to any other question.

The chance of answering all 6 questions correctly is

$(.8)\times(.8)\times(.8)\times(.8)\times(.8)\times(.8)=(.8)^6$

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Monica [59]

Answer:

3 hours

Step-by-step explanation:

44-6= 38 (1 hour)

38-6= 32 (2 hours)

32-6= 26 (3 hours)

8 0

2 years ago

Evaluate -a+(-b)−a+(−b)minus, a, plus, left parenthesis, minus, b, right parenthesis where a = 6.05a=6.05a, equals, 6, point, 05

swat32

Answer: $-9.66$

Step-by-step explanation:

Here the given expression, $-a + (-b)$

Where $a = 6.05$ and $b =3.61$

By putting the given values of a and b in the given expression,

We get,

$- 6.05 + ( -3.61)$

$= -6.05 - 3.61$

$= - (6.05 + 3.61)$

$= - 9.66$

3 0

2 years ago

Read 2 more answers

The coordinates of the vertices for rectangle ABCD are A (2,4), B (6,10), C (9,8) and D (5,2). What

sweet [91]

Answer:

D. $\sqrt{65}$

Step-by-step explanation:

The computation of the length of a diagonal (AC or BD) of the rectangle is shown below:

As we know that

The Diagonal length of AC is

$= (x_2 - x_1)^2 + (y_2 - y_1)^2\\\\= (9 -2)^2 + (8 - 4)^2\\\\= (7)^2 + (4)^2$

$= \sqrt{49 + 16}\\\\= \sqrt{65}$

Therefore correct option is D.

3 0

1 year ago

Lol what.. its kinda bad tho

tino4ka555 [31]

What is bad ??!????????????!

6 0

2 years ago

Read 2 more answers

the first term of an arithmetic sequence is 2 and the sum of the first 15 terms is 292.5. Find the common difference

adelina 88 [10]

Given:

First term of an arithmetic sequence is 2.

Sum of first 15 terms = 292.5

To find:

The common difference.

Solution:

We have,

First term: $a=2$

Sum of first 15 terms: $S_{15}=292.5$

The formula of sum of first n terms of an AP is

$S_n=\dfrac{n}{2}[2a+(n-1)d]$

Where, a is first term and d is common difference.

Putting $S_{15}=292.5$ , n=15 and a=2 in the above formula, we get

$292.5=\dfrac{15}{2}[2(2)+(15-1)d]$

$292.5=\dfrac{15}{2}[4+14d]$

$292.5=15[2+7d]$

Divide both sides by 15.

$\dfrac{292.5}{15}=2+7d$

$19.5=2+7d$

$19.5-2=7d$

$17.5=7d$

Dividing both sides by 7, we get

$\dfrac{17.5}{7}=d$

$2.5=d$

Therefore, the common difference is 2.5.

8 0

2 years ago