Answer:
Step-by-step explanation:
There are two simple rules to remember: When you multiply a negative number by a positive number then the product is always negative. When you multiply two negative numbers or two positive numbers then the product is always positive.
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Answer:
The difference is
inches.
Step-by-step explanation:
See the attached number line where the worm lengths in inches are plotted.
From the number line plotted in the attached photo, it is clear that the shortest worm has the length of
inches and the longest worm has the length of
inches i.e.
inches.
Therefore, the difference in length between the shortest and longest worm is
inches. (Answer)
Let
be the short, medium and long side, respectively. If we translate all the information into formulas, we get the following system:

Using the second equation, we can express the middle side in terms of the small one, and reduce the system to two equations in two unknowns:

And thus

But then again, using the first equation, the third becomes

So, the longest side is 12. Since the small is half the long, we have
. Finally, the medium is three more of the small, so we have 
Answer:
<h3>x = 7</h3>
Step-by-step explanation:
The sum of the adjacent side of the trapezium is 180 degrees, Hence;
97 - 3x + 69+5x = 180
166 + 2x = 180
2x = 180 - 166
2x = 14
x = 14/2
x = 7
Hence the value of x is 7
Answer:
Step-by-step explanation:
=x^2-x-12