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irina1246 [14]
3 years ago
8

The probability distribution for the random variable x follows. x f(x) 21 0.23 25 0.11 30 0.28 37 0.38 is this a valid probabili

ty distribution? what is the probability that x = 30 (to 2 decimals)? what is the probability that x is less than or equal to 25 (to 2 decimals)?
Mathematics
1 answer:
natita [175]3 years ago
3 0
DsVN.abrefvna.bnv.kjer fk.bsv.kardncvlbnr.,fvsdk.
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What is the standard form?
jolli1 [7]

Answer:

Standard form is a way of writing down very large or very small numbers easily. 103 = 1000, so 4 × 103 = 4000 . ... This idea can be used to write even larger numbers down easily in standard form. Small numbers can also be written in standard form.

Step-by-step explanation:

8 0
3 years ago
if a rectangle has an area of 30 square meters and a perimeter of 34 meters . what is the dimensions of the rectangle?
timama [110]
P=2(L+W)  and P=34 so

2(L+W)=34

L+W=17 so we can say

L=17-W

A=LW using L from above

A=(17-W)W

A=17W-W^2 and A=30 so

30=17W-W^2

W^2-17W+30=0

W^2-2W-15W+30=0

W(W-2)-15(W-2)=0

(W-15)(W-2)=0

So the dimensions of the rectangle are 15 meters by 2 meters.
7 0
3 years ago
4/5 x 3/8 in simplest form showing work
gavmur [86]

Answer:

\frac{4}{5}  \times  \frac{3}{8}  =  \frac{3}{10}

The answer is 3/10

4 0
3 years ago
Ordered pair for 3x + 5y = 2 <br><br> 9x + 11y = 14
Brums [2.3K]

Answer:

Step-by-step explanation:

-9x - 15y = -6

9x + 11y = 14

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y = -2

3x - 10 = 2

3x = 12

x = 4

(4, -2)

8 0
3 years ago
Read 2 more answers
Is 3,9,27,81 an arithmetic sequence
suter [353]

Answer:

no, it's geometric sequence

Step-by-step explanation:

hmm

5 0
3 years ago
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