Sam cleaned of his house in 50 minutes. How many hours will it take him to clean his entire house?

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

7 0

Answer:

20min

Step-by-step explanation:

Shtirlitz [24]3 years ago

4 0

They cleaned how much of the house in 50 minutes? If you tell me this, I can give you an answer.

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(x+6) (z-y) __________ (x+y) x= -3 y= 4 z= 5

Oksana_A [137]

Answer:

The answer is 4/1

Step by step

So x=-3 y=4 and z=5 so i added - 3 +6 to get positive 3 and z - y to get postive 1. X +y gives you positive 1 also so if u join both you get an improper fraction 4/1

7 0

2 years ago

You want know if self-checkout is faster than regular checkout. One hundred customers were sent to

Kazeer [188]

A researcher's design of an experiment is to make clearer already known

facts, or to discover new knowledge.

The responses are:

Experimental units: The customers

Explanatory variable: The type of checkout used

Treatments: The checkout to which a customer is sent to

Response variable: The time it takes to check out

Reasons:

The aim of the experiment is to determine if self-check out is faster than

regular checkout.

The number of customers sent to one of the checkout options = 100

The experimental units are the subject of the experimental treatment.

Therefore;

The experimental units are the customers that are sent to a particular checkout.

An explanatory variable is the manipulated variable in an experiment. An explanatory variable is known as an independent variable.

In the question, the explanatory variable are the type of checkout; Self-checkout or regular checkout

Treatments are the levels of the explanatory variable available in the experiment, or a combination of the levels. The treatment is what the experimental units are subjected to.