Answer:
0.333
Step-by-step explanation:
The first sequence starts at 1 and has a common difference of 2. It will include every odd number in the range.
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The second sequence starts at 1 and has a common difference of 3. It will include odd numbers and the even numbers 4, 10, 16, .... That is, all even numbers of the form 6n -2 will be included. The last one corresponds to the largest value of n such that ...
6n -2 ≤ 1000
6n ≤ 1002
n ≤ 167
That is, 167 even numbers will also be excluded.
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The third sequence starts at 1 and has a common difference of 4. Every number in this sequence is also a number in the first sequence.
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So the numbers in these sequences include all 500 odd numbers and 167 even numbers, for a total of 667 numbers. The probability that a randomly chosen number is not in one of these sequences is ...
(1000 -667)/(1000) = 333/1000 = 0.333 . . . . p(not a sequence term)
Answer:
Step-by-step explanation:
Pollution can be defined as the introduction of harmful substances (man-made or natural) into the environment.
There are four major types of pollution:
1. Land pollution
2. Water pollution
3. Air pollution
4. Noise pollution
Land pollution refers to the gradual disintegration of the earth surface.
Causes of land pollution
1. Deforestation: The continuous cutting down of trees in the forest.
2. Erosion: The gradual disintegration of soil caused by the action of water.
3. Harmful agricultural practices such as bush burning, introducing toxic substances such as pesticides into the soil
4. Increased industrial waste due to increase in the number of industries
5. Mining of natural resources from the earth surface
6. Construction of bridges, railways and roads
Answer:
yes no total
girls 58 32 90
boys 52 40 92
total 110 72 182
Step-by-step explanation:
if 182 freshmen were surveyed and 110 said yes, then 182 - 110 = 72 said no
if 40 boys said no, then 72 - 40 = 32 girls said no
if 90 girls were surveyed, then 182 - 90 = 92 boys were surveyed
if 40 boys said no, then 92 - 40 = 52 said yes
if 32 girls said no, then 90 - 32 = 58 said yes
I think 3/4 of would be 48 making 4/4 of x 64
Just do 16•3
