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xz_007 [3.2K]
3 years ago
12

Can someone please help me with number 15?

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
6 0

the answer is 2. because you need to subtract the fractions once you do that you’ll get -2 • (-1) then multiple you’ll have 2 .

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28,32,47,16,40,35,38,54 what is the MAD of the data
horsena [70]

Answer:

Mean Absolute Deviation (MAD): 8.5

Step-by-step explanation:

Xmean = (28 + 32 + 47 + 16 + 40 + 35 + 38 + 54)/8  = 290/8

Xmean = 36.25

MAD =

(28 - 36.25) + (32 - 36.25) + (47 - 36.25) + (16 - 36.25) + (40 - 36.25) + (35 - 36.25) + (38 - 36.25) + (54 - 36.25)  divided by 8

a break down of each ( )

(8.25) + (4.25) + (10.75) + (20.25) + (3.75) + (1.25) + (1.75) + (17.75)  divided by 8  =  68

then you take 68/8 = Mean Absolute Deviation  8.5

5 0
3 years ago
Read 2 more answers
A recent report in a women magazine stated that the average age for women to marry in the United States is now 25 years of age,
MrRissso [65]

Answer:  0.0136

Step-by-step explanation:

Given : Mean : \mu=\ 25

Standard deviation : \sigma= 3.2

Sample size : n=50

The formula to calculate the z-score :-

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x = 24

z=\dfrac{24-25}{\dfrac{3.2}{\sqrt{50}}}=-2.20970869121\aprox-2.21

The P-value =P(z\leq24)=0.0135526\approx0.0136

Hence, the probability that the sample mean age for 50 randomly selected women to marry is at most 24 years = 0.0136

8 0
4 years ago
Dang it these are tricky for me can somebody help?
erica [24]

Answer:

It has no perfect square factors, unless you count 1 = 1^2. That's sort of a degenerate case we don't usually count, since every integer has that factor. We would usually say that 1290 is a square-free integer. Hope this helps!!

5 0
4 years ago
Which triangles are congruent by ASA?
olganol [36]
Side BC is congruent to side DC. (That's what the hash marks mean.) Angle C is congruent with itself, and the right angles at B and D are all congruent.

Thus, you want to choose triangle names that show BC congruent to DC. The appropriate selection is the second one ...
  ∆ADC ≅ ∆EBC
3 0
4 years ago
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What is the square root of 21
Deffense [45]

The Exact Square Root Is: 4.58257569496

Estimate Is: 5

5 0
3 years ago
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