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Maru [420]
3 years ago
11

1/4 x -2>1 and the grater than sign has a line under it.

Mathematics
1 answer:
antoniya [11.8K]3 years ago
8 0

For this inequality x is greater than or equal to 12

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Which one is bigger 25 mm or 3 cm
Marat540 [252]

Answer:

3 cm

Step-by-step explanation:

3 cm converted to mm would be 30 mm which is bigger than 25 mm

8 0
3 years ago
A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distri
Softa [21]

Answer:

The data item is X = 580

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 400 and a standard deviation of 60.

This means that \mu = 400, \sigma = 60

z=3

We have to find X when Z = 3. So

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

3 = \frac{X - 400}{60}

X - 400 = 3*60

X = 580

The data item is X = 580

6 0
3 years ago
Which is greater ? 9/20 or 0.06
bekas [8.4K]
9/20 is greater

9/20 = 0.45
..............
4 0
3 years ago
Read 2 more answers
Find the 20th term of the arithmetic sequence 15,9,3,-3
kati45 [8]

Answer:

-99

Step-by-step explanation:

a = 15 \\ d =  - 6 \\  {n}^{th} term = a + (n + 1)d  = 15 + (n - 1)( - 6) \\  {20}^{th} term =15 + (20 - 1)( - 6) = 15 - 114 =  - 99

3 0
2 years ago
The ratio of girls to boys in Liza’s classroom is 5 to 4.
ruslelena [56]

Answer:

15

Step-by-step explanation:

5+4=9

27÷9=3

girl's ratio is 5 so

5×3=15

answer is 15

6 0
3 years ago
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