No, "open" is not a preposition. It is an adjective or a verb, depending on how it is used in a sentence.
No, the sentence is not correct. It should be: "Open envelopes and then reseal them." The pronoun "them" should be used to refer to the plural noun "envelopes."
Certainly! Here is an example of an open-ended sentence: "Tell me about your favorite vacation experience and why it was so special to you."
He pried open the locked drawer with a screwdriver.
The dweller in the dark forest rarely ventured out into the open fields.
a solution
A open sentence is an equation with one or more variables is an open sentence.
domain
an open sentence is defined as one that contains "free variables," which are variable that have not been assigned a specific meaning. Because of this open sentences cannot be labeled as true or false, their status is "open. Any number that makes the open sentence true satisfies it. In general we would call these the solutions or solution set. I must state that there are many definitions in many books that all give slightly different answers to what an open sentence is.
An open sentence.
7
It is called an open sentence.
An open sentence is neither true nor false. It depends on the value of the variable. If you had 5=3 that would be a closed sentence which is false. If you had 5=5 that would be a closed sentence which is true. If you had x=3 then it is open to whether the x is a 5 or a 3.
an open sentence can be either true or false, depending on what values are substituted for the variables. A SOLUTION of an open sentence with on variable is a value that makes the sentence true. The solution of the equation x+3=5 is 2. One solution of the inequality x-1>4 is 6, and there are many more solutions. hope this helps
Because it is neither true or false until the variable is replaced with a specific value making the sentence true or false.
An equation or an inequality that contains at least one variable is called an open sentence. ... When you substitute a number for the variable in an open sentence, the resulting statement is either true or false. If the statement is true, the number is a solution to the equation or inequality.
I'm pretty sure it's an open sentence.