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lisabon 2012 [21]
3 years ago
14

Can anybody help? Exponential Functions

Mathematics
1 answer:
lana [24]3 years ago
4 0
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Based on a poll, 40% of adults believe in reincarnation. Assume that 8 adults are randomly selected, and find the indicated prob
Veronika [31]

Answer:

The probability under the given conditions is found:

P(7) = 0.079

Step-by-step explanation:

Let x be the number of adults who believe in reincarnation.

Adults randomly selected = 8

percentage of adult believe in reincarnation = 40% = 0.4

x follows binomial distribution:

P(x) =  \left(\begin{array}{ccc}n\\x\end{array}\right) (p)^x(1-p)^{n-x}

where

n= total people random people selected = 8,

x = selected for the part = 7,

p = probability given = 0.4

P(7) = \left(\begin{array}{ccc}8\\7\end{array}\right) (0.4)^7(1-0.4)^{8-7}

P(7)= (8)(0.0164)(0.6)

P(7) = 0.07872

Rounding off to 3 decimal positions

P(7) = 0.079

8 0
3 years ago
Curved surface of a cone of slant height 20 cm and base radius 14 cm is ____. * 1 point 280 sq.cm 2080 sq.cm 1496 sq.cm 880 sq.c
valkas [14]

Answer:

880 cm²

Step-by-step explanation:

Given that :

Curved surface area of a cone : πrl

r = base Radius = 14 cm

l = slant height = 20 cm

Hence,

Curved surface area = π * 14 * 20

Curvwd surface are = π * 14 * 20

Curved surface area = 879.64594 cm²

Curved surface area = 880 cm²

7 0
2 years ago
26. Using only digits 0, 1 and 2, this cube has a different
Art [367]

Answer:

Step-by-step explanation:

Possible largest numbers using digit 0 , 1 , 2

222  

221  

220  

212  

211  

210  

222 + 210  = 221 + 211  = 220  + 212 = 432

 

Largest total can be 432

7 0
3 years ago
If Neil Works 3/4 of an hour on Monday and 6/10 of an hour on Tuesday how much time will she work altogether?
jek_recluse [69]

Answer:

C

Step-by-step explanation:

3/4 + 6/10

Find a common denominator and find what you multiply to each denominator to get that number and multiply the numerator by the same amount

(3/4 * 5/5) + (6/10 * 2/2)=

15/20 + 12/20

Then add

15/20 + 12/20= 27/20

Then finally convert to mixed number

27/20 = 1 7/20

7 0
3 years ago
Find the fractional side lengths of a rectangle that has a perimeter of 64 5/6 inches.
Margarita [4]
H oh oh oh ola oholglvl k,
8 0
3 years ago
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