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AlladinOne [14]
3 years ago
5

What effect does subtraction have on terms in parentheses when you remove parentheses

Mathematics
1 answer:
amm18123 years ago
4 0

nswer:

Terms in parentheses are handled first. If the parentheses are removed, it will change the answer.

Step-by-step explanation:

example:

(4-3)2 reduced would be 2     (because the 4-3 would be handled first.)

4-3x2 reduced would be -2     (because the multiplication would be handled first.)

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The ratio of pink marbles to white marbles in samaras bag is equal to 1:5 what percent of the bag contains pink marbles
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Answer: i dont want to give the exact answer so u can actually know how to do it but i will tell u if ur right

Step-by-step explanation:

We will follow the following steps for converting a ratio into a percentage:

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3 years ago
Using a graph, table of values, and/or equations solve the following problem.
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n = 11/3

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3 years ago
Two similar trapezoids have areas
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2 years ago
Read 2 more answers
To reduce laboratory​ costs, water samples from five public swimming pools are combined for one test for the presence of bacteri
aleksklad [387]

Answer:

Step-by-step explanation:

Given that:

The numbers of the possible public swimming pools are 5

From past results, we have 0.007 probability of finding bacteria in a public swimming area.

In the public swimming pool, the probability of not finding bacteria = 1 - 0.007

= 0.993

Thus;

Probability of combined   =  Probability that at least one public

sample with bacteria           swimming area have bacteria

Probability of combined sample with bacteria  = 1 - P(none out of 5 has          

                                                                                bacteria)

   

Probability of combined sample with bacteria = 1 - (0.993)⁵        

= 1 - 0.9655

= 0.0345

Thus, the probability that the combined sample from five public swimming areas will show the presence of bacteria is 0.0345

From above, the probability that the combined sample shows the presence of bacteria is 0.0345 which is lesser than 0.05.

Thus, we can conclude that;  Yes, the probability is low enough that there is a need for further testing.

6 0
3 years ago
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