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PilotLPTM [1.2K]
4 years ago
15

working together, shawn and hector can install a tile floor in 6 hours. it would take shawn 9 hours to do the job alone. what is

the value of r, the part of the tile that hector could install in 1 hour?

Mathematics
2 answers:
Vikki [24]4 years ago
8 0
First, let x be the number of hours it will take for Hector to finish the same job alone. This means that every hour, Hector can do 1/x of the job. The amount of work done by Shawn and Hector in 6 hours should be equal to 1 complete work. This can be expressed as,
                      (1/9 + 1/x)(6) = 1
The value of x is 18. Thus, Hector can to 1/18 of the job in one hour. 
Evgen [1.6K]4 years ago
5 0

Answer:

A. 1/18

Step-by-step explanation:

Just did it!!

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  3) y = -1

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3 years ago
indictate which of the following are propositions.For the ones which are propositions, determine the truth value.(a) The integer
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Step-by-step explanation:

When we propose an hypothesis, it is either true or false. The same goes for a proposition.

The required objective here is to determine the truth value in the following proposition.

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(b) Is the integer 3​15​ even?

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(a) The integer 24 is prime.

The sentence is a proposition but the truth value is FALSE because a prime number is a number that can only be divide by 1 and itself but in the case of 24, Its factors include  1,2,3,4,6,8,12 and 24 which make 24 to falsify the proposition of being  a prime number.

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(d)   -4 ∈ Ζ

This is a proposition and the truth value is TRUE.

-4 ∈ Ζ  is read as ( minus four is an integer  (∈)  of Z )

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