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Talja [164]
3 years ago
11

Does anyone know this please help

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
7 0

Answer:

b.12/25

c.4/15

d.8/15

e.6/12

2a.15/24=5/8

b.20/40=1/2

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Step-by-step explanation:

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If y varies directly with x, then the ratio y/x will always be the same. Set it equal to the known values and solve for y.

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Determine whether each of these sets is finite, countably infinite, or uncountable. For those that are countably infinite, exhib
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b) Let S the set of odd negative integers

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c) The integers with absolute value less than 1,000,000 are in the intervals A=(-1.000.000, 0) B=[0, 1.000.000). Then there is 998.000 integers in A that satisfies the condition and 999.000 integers in B that satifies the condition.

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Consider the following correspondence:

f: S\rightarrow \mathbb{Z}^+ defined by f(2,k)=2k, \;f(3,j)= 2j+1

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2. f(3,k)=f(3,j), then 2k+1=2j+1, then 2k=2j, thus k=j.

3.  f(2,k)=f(3,j), then 2k=2j+1. But this is impossible because 2k is an even number and 2j+1 is an odd number.

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