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2 years ago

You are taking a true/false quiz with 9 questions. What is the probability of getting all 9 questions correct?

Mathematics

2 answers:

serg [7]2 years ago

7 0

Answer:

If you guess do this -

.5(9)

Basically about a 4.5% chance of getting all right.

Snowcat [4.5K]2 years ago

6 0

Answer:

Step-by-step explanation:

each question has 2 answer choices, so 1 or the 2 is correct, and to get all 9 in a row correct would be like this

1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2

because theres a 1 in 2 chance of getting each question right, and there are 9 questions

1/2^9 = 0.00195 = 0.195%

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2 years ago

What is the remainder when 3^99 is divided by 8?

Gnom [1K]

Answer:

Step-by-step explanation:

3^1=3 divided by 8 will give a remainder of 3

3^2=9 divided by 8 will give a remainder of 1

3^3=27 divided by 8 will give a remainder of 3

3^4=81 divided by 8 will give a remainder of 1

3^5=243 divided by 8 will give a remainder of 3

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3 0

2 years ago

Read 2 more answers

You and your best friend are meeting at

chubhunter [2.5K]

Answer:

10.6 miles

Step-by-step explanation:

The corner where Starbucks is located could be considered to be the right angle in a right triangle having legs of 8 miles (distance to you) and 7 miles (distance to your friend). The straight-line distance (d) from you to your friend is the hypotenuse of that triangle. Its length can be found from the Pythagorean theorem.

d² = 8² +7²

d² = 64 +49 = 113

d = √113 ≈ 10.6

You and your friend are about 10.6 miles from each other.

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1 year ago

Can you help me find the side??? It's trigonometry!!

olganol [36]

Answer: 5.6

===================================

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(B) = AB/BC

cos(62) = AB/12

12*cos(62) = AB

AB = 12*cos(62)

AB = 5.63365875

AB = 5.6

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2 years ago

What is the probability of rolling an even number when rolling a 6-sided die?

lukranit [14]

Answer:

B.1/2

Step-by-step explanation:

Half of the numbers on a dice are even, so you have a 1 half probability of landing on an even number

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2 years ago

You are taking a true/false quiz with 9 questions. What is the probability of getting all 9 questions correct?​

You are taking a true/false quiz with 9 questions. What is the probability of getting all 9 questions correct?