Choose the correct simplification of the expression (5a7b)2.?
In maths notation the symbol "^" represents an exponent. I am assuming that you therefore mean (5a^7b)^2 ie (5 x "a" to the power 7 x b ) and the whole expression is then squared. If this is the case then (5a^7b)^2 = 25a^14b^2 (I presume the first answer that you quote is intended to be this!)
Choose the correct description of the meaning of the expression "collecting a gas over water".?
1.A gas may be collected over water to obtain high purity. 2.A gas may be collected over water to determine its solubility in water. The change of volume of gas is equal to its solubility. 3 A gas may be collected over water to determine the volume of water. The volume of gas collected displaces an equal volume of water. 4.A gas may be collected over water to determine its volume. The volume of gas collected displaces an equal volume of water.
Choose the correct simplification of the expression a^6b^3/a^4b^2?
rule: a^a/a^b = a^(a-b) a^6b^3/a^4b^2 =>a²b
What does the phrase "two sides of a coin" mean?
This is an American idiom. It means this: just as there are two sides to a coin there are two sides to every story.For example, a couple has an argument. He argues from his point of view and she argues from her point of view. There are two differing points of view just as there are two sides to a coin.In politics there are those who see things from a conservative point of view and those who see things from a liberal point of view just as there are two sides to a coin.The idiom does not identify who is right and who is wrong, it just points out that every idea can be seen from more than one viewpoint.
Please help with prepositions. (multiple choice)?
1) Which sentence contains a compound preposition? A. It takes a long times a get to know someone. B. When we were dating, he seemed so honest. C. Luckily, before we got married, I found out that my boyfriend was cheating. D. The French fry slipped in between the drive's seat and the center console. 2) The expression "in spite of of" is an example of a A. verbal phrase B. prepositional phrase of location C. compound preposition D. conjunction 3) Choose the correct preposition to use with a month "Columbus Day always falls ____ October" A. white B. at C. on D. in 4) Which preposition is used to indicate location? A. without B. beneath C. until D. during 5) Identify the prepositional phrase in this sentence. "After we finish our reports, we are going to go to the movies." A. After we finish our reports B. to the movies C. are going D. to go
Which is the correct phrase, "pair of shoes" or "pairs of shoes"? How are they used?
With this question, one must consider both nouns SEPARATELY .For example : one pair is singular and many pairs is plural“A pair” automatically means : “two” so, the noun following the quantitive noun it modifies is always written in the plural. In both situations : “shoes” is plural .A person can own just one (1) pair of shoes or A person may own ten (10) pairs added “s” for pairs and then “s” for the plural of shoes . Both statements are correct. It is only the word: “pair” which changes depending on the number qualifying the noun: For example, one (1) pair (singular form), two pairs (plural form) , three pairs. (plural form). Other words called : “collective nouns” fall into this category. For example: “set” as in a set of golf- clubs or a set of dishes; “group” as in a group of girls; “swarm” as in a swarm of bees; “herd” as in a herd of cows etc.The words: golf- clubs, dishes, girls, bees, and cows end with an “s” for plural form.