~
(20 pts, pls answer these correctly, if possible ^^;;)
2 answers:
Answer:
1. always
2.never
3.sometimes
4.always
5.sometimes
6.always
Step-by-step explanation:
It is clear from the given number line, that is a negative integer and
is a positive integer.
1. It is always true because addition is always commutative property.
2. It is never positive because product of two different sign is always negative.
3.dividing two integer with unlike sign may result in any integer
4.when a positive quantity is reduced from a negative quantity, the result is always negative.
5.division of two unlike integers may result the same,if they both have the same value
6.If an opposite of a positive integer is added to that positive integer itself, the result is is always 0.
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The college student took 13 courses of 3 credit hours.
Step-by-step explanation:
Given,
Total credits = 59
Total courses = 18
Let,
Number of 3 credit hour courses = x
Number of 4 credit hour courses = y
According to given statement;
x+y=18 Eqn 1
3x+4y=59 Eqn 2
We will eliminate y to find the number of 3 credit hour courses, therefore,
Multiplying Eqn 1 by 4
Subtracting Eqn 2 from Eqn 3
The college student took 13 courses of 3 credit hours.
Keywords: linear equation, subtraction
Learn more about linear equations at:
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