A six-sided number cube is rolled 300 times. The results are 120 even numbers and 180 odd numbers.

Mathematics

1 answer:

Stella [2.4K]2 years ago

6 0

Answer:

What is the probability formula?

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In general, the probability is the ratio of the number of favorable outcomes to the total outcomes in that sample space. It is expressed as, Probability of an event P(E) = (Number of favorable outcomes) ÷ (Sample space).

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Which would the phrase "twice the difference of a number and 5" look like as a variable expression? A) 2(x-5)

Ira Lisetskai [31]

A) 2 (x-5)
because difference means subtraction and it is twice that

4 0

3 years ago

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20 points!! Please help

Bas_tet [7]

Answer:

If the statement is true, lines a and b are parallel

Step-by-step explanation:

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8 0

3 years ago

One person can do a certain job in 15 minutes and another person can do the same job in 30 minutes. How many minutes will it tak

Flauer [41]

Hello! Your answer is B, 10 minutes.

Say the x = minutes taken to do the job. You can set up an equation like this to solve this.

$\frac{1}{15} x + \frac{1}{30} x = 1$

This is representative of the situation. The fractions each represent how much each person does in a minute, and when they're multiplied by x, that's how much of the project they get done based off of the minutes they work together on the job. Add the two together, and you get how much of the project is finished in x amount of time. Set it equal to 1, as you are looking for 100% completion.

Once you have this equation, find a common denominator, add, and solve.

$\frac{1}{15} x + \frac{1}{30} x = 1$

$\frac{2}{30} x + \frac{1}{30} x = 1$