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3 years ago

Please help!!

Mathematics

2 answers:

Zina [86]3 years ago

7 0

Answer:

you have a 1/5 chance of choosing a red marble.

Step-by-step explanation:

Ivan3 years ago

3 0

Answer:

Your probability of choosing a red marble is 30%

Step-by-step explanation:

You'll need to start by adding all the marble's which will give you 100.

30 + 50 + 20 = 100

Then add up the non-red marbles, which is 70.

50 + 20 = 70

30 red marbles are left.

Now, you'll have the fraction 30 over 100.

As a percentage that would be 30%

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e-lub [12.9K]

Answer:

Step-by-step explanation:

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3 years ago

A manager must select three coders from her group to write three different software projects. There are 7 junior and 3 senior co

gavmur [86]

Answer:

The total number of ways are 168.

Step-by-step explanation:

Consider the provided information.

There are 7 junior and 3 senior coders in her group.

The first project can be written by any of the coders. The second project must be written by a senior person and the third project must be written by a junior person.

For second project we have 3 choices and for third project we have 7 choices.

Now there are 2 possible case:

Case I: If first and second coder is senior, then the total number of ways are:

$3\times 2\times 7=42$

Case II: If first and third coder is junior, then the total number of ways are:

$7\times 3\times 6=126$

Hence, the total number of ways are: 42+126=168

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3 years ago

Which of the following ratios is equivalent to 5 to 20

morpeh [17]

<h2>which of the following ratios is equivalent to 5 to 20</h2>

10:40

Step-by-step explanation:

because 5/20=1/4 and 10/40 is also equal to 1/4.

hope it helps

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3 years ago

quadrangle college has a space for 580 students in the first year class the college estimates that 65% of the studentswho are ad

navik [9.2K]

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4 years ago

What is y intercept and slope

iren2701 [21]

Answer:

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Step-by-step explanation:

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3 years ago

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