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Anastaziya [24]
3 years ago
11

Is 12/4 rational or irrational

Mathematics
2 answers:
alisha [4.7K]3 years ago
8 0
It’s Rational
Cuz it’s right just trust me bro
Arturiano [62]3 years ago
6 0

Answer:

rational

Step-by-step explanation:

The improper fraction 12/4 is a rational number. It is equivalent to the whole number 3, which is an integer.

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Find the ratio to its lowest 9cm to 36cm​
abruzzese [7]

Answer:

1:4 or 1/4

Step-by-step explanation:

9 cm : 36 cm

They both can be divided by 9 so,

9 ÷ 9 : 36 ÷ 9

= 1 : 4

Hope this helps

3 0
2 years ago
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Write an equation that represents the pattern in the table
Slav-nsk [51]
Y=3x

explain
4x3=12 , 5x3=15 , 6x3=18 ,.......
8 0
2 years ago
Maggie put together 450 party favors for the spring dance. If 170 party favors were donated and the rest were purchased, which e
Troyanec [42]

F

Because p = ammount maggie purchased

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2 years ago
What expressions equal to 1 forth of 52
Klio2033 [76]
Remember that x/4 and 1/4*x is the same thing.

1/4*52 is therefore the same as 52/4. Fractions represent division, so 52 divided by 4 is also correct.
0.25*x is the same as 1/4*x because 1/4=0.25
4% of 52 is incorrect because the decimal form of 4% is 0.04, which is not the same as 0.25

Final answer: B
5 0
3 years ago
Read 2 more answers
The number of major earthquakes in a year is approximately normally distributed with a mean of 20.8 and a standard deviation of
SCORPION-xisa [38]

Answer:

a) 51.60% probability that in a given year there will be less than 21 earthquakes.

b) 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 20.8, \sigma = 4.5

a) Find the probability that in a given year there will be less than 21 earthquakes.

This is the pvalue of Z when X = 21. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{21 - 20.8}{4.5}

Z = 0.04

Z = 0.04 has a pvalue of 0.5160.

So there is a 51.60% probability that in a given year there will be less than 21 earthquakes.

b) Find the probability that in a given year there will be between 18 and 23 earthquakes.

This is the pvalue of Z when X = 23 subtracted by the pvalue of Z when X = 18. So:

X = 23

Z = \frac{X - \mu}{\sigma}

Z = \frac{23 - 20.8}{4.5}

Z = 0.71

Z = 0.71 has a pvalue of 0.7611

X = 18

Z = \frac{X - \mu}{\sigma}

Z = \frac{18 - 20.8}{4.5}

Z = -0.62

Z = -0.62 has a pvalue of 0.2676

So there is a 0.7611 - 0.2676 = 0.4935 = 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

5 0
3 years ago
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