8-11 is negative 3 and 4 - 5 is negative 1
Answer:
5 < x < 21
Step-by-step explanation:
The sum of the shorter sides is greater than the longest side.
If 13 is the longest side:
x + 8 > 13
x > 5
If x is the longest side:
8 + 13 > x
21 > x
Therefore, the third side is any number between 5 and 21.
Answer:
5x
Step-by-step explanation:
Answer:
-3°F
Step-by-step explanation:
6 - 9 = -3°F
Answer:
length: 23 m; width: 11 m.
Step-by-step explanation:
The perimeter of a rectangle is twice the sum of its length and width, so that sum is 34 m. Then you can write two equations in length and width:
l + w = 34
l - w = 12
Adding these together gives you ...
2l = 46
l = 23 . . . . . . divide by 2
Then the width is
w = 23 -12 = 11
The length and width are 23 m and 11 m, respectively.
