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Ganezh [65]
3 years ago
14

The denominator of a unit rate is always_____.​

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0

Answer:

The denominator is always 1.

Step-by-step explanation:

Km per hour means: How many Km in ONE hour

Students per class means: How many students in ONE class

Dollars per box means: How many dollars for ONE box.

"per" means for each or for every 'ONE'

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Find the slope of -y=-1x+0
DIA [1.3K]

Answer:

1

Step-by-step explanation:

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8 0
2 years ago
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which expression represents purely real numbers and which expression represents non-real complex number?​
Lyrx [107]

Answer:

Step-by-step explanation:

Complex numbers are the numbers represented by the expression = a + bi

Here a = real part of the number

bi = imaginary part

a and b are the real numbers.

i^9=(i^2)^4.(i)

    =(-1)^{4}.i [Since, i^2=-1]

    =i

Therefore, its a non real complex number.

2 - \sqrt{-49} = 2-\sqrt{(-1)(7)^2}

               = 2-7\sqrt{-1}

               = 2-7i

This number is a Non real complex number.

\sqrt{(-18)^2}=18\sqrt{-1}

              = 18i

It's a non real complex number.

3 + 2i

It's a non real complex number.

-289

It's a purely real number.

4-32i^2=4-32(-1)

             = 4 + 32

             = 36

It's a purely real number.

6 0
2 years ago
If an experimenter sets equal to .01, then she is defining a "statistically rare" event as an event occurring more than one time
Fynjy0 [20]

Answer:

The correct answer is an event occurring one or fewer times in 100 times if the null hypothesis is true.

Step-by-step explanation:

For a statistically rare event, its probability is relatively small and the event is very unlikely to occur.  Therefore, if an experimental sets equal to 0.01 which is statistically rare, then we can interpret this mathematically as:

p(event) = 0.01 = 1/100

where p(event) is the probability of the event.

In addition, statistically, null hypothesis signifies no major difference between the specified parameters, and any obvious difference that might occur as a result of experimental error. Thus, it can be concluded that the event is occurring one or fewer times in 100 times if the null hypothesis is true.

3 0
3 years ago
480 is what percent greater than 160
MrMuchimi
160 is 100% of 160, 480 is 4 times that. So 400%
7 0
3 years ago
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Where t is the number of years since 1997 and y is the number of camera phones shipped(in millions). How many camera phones were
Furkat [3]
Not enough information if that is an option
3 0
3 years ago
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