The simple way of calculating a perimeter is to add all of the sides.
For a rectangle this would equal 2 x length + 2 x width
P = 2(6x + 3) + 2(-2x - 5)
= 12x + 6 - 4x - 10
= 8x - 4
At a higher level both the length and width must be greater than zero (= zero is a trivial rectangle)
6x + 3 > 0
6x > -3
x > -0.5
-2x - 5 > 0
2x + 5 < 0 (multiplying by -1 reverses the inequality)
2x < -5
x < -2.5
This rectangle cannot exist as x cannot be < -2.5 and > -0.5 at the same time!
Step-by-step explanation:
to solve you just add the length of each line segment. In this problem 1.7+3.2=4.9
Answer:
That is a variable.
Step-by-step explanation:
- opposed to a constant which is known and does not change.
3 dumplings can be made by Serenity
<em><u>Solution:</u></em>
Given that,
Serenity has
cups of dough to make dumplings
She uses
cup of dough for each dumpling
To find: Number of whole dumplings made
From given information,


To find the number of whole dumplings made, we can divide the total cups of dough by cups of dough for 1 dumpling

Thus 3 dumplings can be made