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Maksim231197 [3]
3 years ago
12

Twenty percent of all undergraduates at a university are chemistry majors. In a random sample of six ​students, find the probabi

lity that exactly four are chemistry majors.
Mathematics
1 answer:
tamaranim1 [39]3 years ago
6 0
The probability that 4 are chem majors would be 5%
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Taya2010 [7]
The number in the ones place= X
The number in the tenths place= y
y+x=14.
y=14-x

Original placement of numbers=10y+x
New placement of numbers(after subtraction of 36)= 10x+y

10y+ x-36=10x+y
Substitute y with 14-x
So we would get

10(14-x)+ x-36=10x+(14-x)
=140-10x+x-36=10x+14-x
After transposing we get
140-14-36=10x-x+10x-x
=90=18x
X=90/18
x=5

Y=14-x
=14-5
=9


So the two digit number is
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Vanyuwa [196]
The hint says that volume of a rectangular solid = l*w*h, where l = length, w = width, and h = height. Use this to solve for the height of the solid by plugging in the numbers you know.

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160 = (2)(8)(h)
160 = 16h
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Answer: The height is 10 cm

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