Answer:
Common Difference: 
The ninth term: -1
Step-by-step explanation:
The sequence can be written like this,
3, 2.5, 2, 1.5, 1, ....
Here the common difference is clearly -0.5 or , and we can conclude that 
number is 
. So the 9th term is,
The legs of an isosceles triangle are 7cm longer than the base. Find the legs if the perimeter of the triangle is 38cm.
(38 - 7 - 7) : 3 = <em>8 cm (base)</em>
8 + 7 =
<h2><u><em>
15 cm ( Legs)</em></u></h2>
check
8 + 15 + 15 = 38
the answer is good
Answer:
14
-2
Step-by-step explanation:
Answer:
I'm pretty sure "x" is 3 because
Step-by-step explanation:
3 x 2 is 6 + 1 is 7
