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rewona [7]
3 years ago
11

A five-question quiz is taken in which the first and second questions have four answer choices, the third and fourth questions h

ave three answer choices, and the last question has five answer choices. If a student randomly marks an answer for each question, what is the expected number of questions he will answer correctly?
Mathematics
2 answers:
Andrej [43]3 years ago
5 0

Answer:

1.37

Step-by-step explanation:

pychu [463]3 years ago
3 0

Answer: choice a 1.37 is the awnser

Step-by-step explanation:

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Please answer ASAP I will give you five stars
Nataliya [291]

Known :

r = 6

h = 8

Asked :

V = ...?

Answer :

V = ⅓πr²h

= ⅓ × 3.14 × 6² × 8

= ⅓ × 3.14 × 36 × 8

= 3.14 × 12 × 8

= 301.44 units²

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So, the volume of the cone is 300 units²

<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>

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3 years ago
Which of the follwing is not equivalent to the ratio 50/75
oee [108]
For example, 1/2 in not an equivalent ratio
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A card is drawn at random from a standard pack of playing cards.
Hatshy [7]

Answer:

the chance at getting 9 is 17% and then 50% for the coin

Step-by-step explanation:

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2 years ago
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andrew-mc [135]

Step-by-step explanation:

The sum of all angles in a triangle is always 180.

So we can set up an equation

3/2x+1/2x+x= 180

3/2+1/2x+2/2x=180

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90 is 75% of what number
Viktor [21]

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Step-by-step explanation:

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