Answer:
As you can see when you list out the factors of each number, 3 is the greatest number that 21 and 33 divides into.
Step-by-step explanation:
As you can see when you list out the factors of each number, 3 is the greatest number that 21 and 33 divides into.
Answer:
The interval of hours that represents the lifespan of the middle 68% of light bulbs is 1210 hours - 1390 hours.
Step-by-step explanation:
In statistics, the 68–95–99.7 rule, also recognized as the Empirical rule, is a shortcut used to recall that 68%, 95% and 99.7% of the values lie within one, two and three standard deviations of the mean, respectively.
Then,
- P (µ - σ < X < µ + σ) = 0.68
- P (µ - 2σ < X < µ + 2σ) = 0.95
- P (µ - 3σ < X < µ + 3σ) = 0.997
he random variable <em>X</em> can be defined as the amount of time a certain brand of light bulb lasts.
The random variable <em>X</em> is normally distributed with parameters <em>µ</em> = 1300 hours and <em>σ</em> = 90 hours.
Compute the interval of hours that represents the lifespan of the middle 68% of light bulbs as follows:

Thus, the interval of hours that represents the lifespan of the middle 68% of light bulbs is 1210 hours - 1390 hours.
1:3:4
1x:3x:4x
1x + 3x + 4x = 8x
8x = 56
x = 7
1(7) = 7
3(7) = 21
4(7) = 28
Check: 7 + 21 + 28 = 56
So 56 can be divided in the ratio of 1:3:4, and it will be 7, 21, 28
Answer:
you're correct on the first one, and the second one is 8.
Answer:
20,475 cream cups are possible.
Step-by-step explanation:
The order in which the flavors are chosen is not important, which means that the combinations formula is used to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

In this question:
4 cups from a set of 28.
So

20,475 cream cups are possible.