Answer:
402.07
Step-by-step explanation:
9 3/10, 3 8/10, 2 9/10
8/10 + 9/10 = 1 7/10
3+2+1 7/10 = 6 7/10
9 3/10 - 6 7/10 = 2 6/10
The highest point is when y = 0 and the lowest point is when y = -5
We can see this if we draw horizontal lines through the highest and lowest points (see the diagram below). Note where the horizontal lines cross the y axis. For y = 0, we don't really need a horizontal line but I'll draw it anyway.
Since y ranges from y = -5 to y =0, the range is therefore 
<h3>Answer: y is a real number such that

</h3>
Side note: to write this in interval notation, you would say
. The square brackets say to include each endpoint as part of the range.
Answer:
38 cm.
Step-by-step explanation:
Two sides are equal ( as its an isosceles triangle). so:
3x - 5 = 19 - x
3x + x = 19 + 5
4x = 24
x = 6.
So the perimeter
= 3x - 5 + 19 - x + 2x
= 3(6) - 5 + 19 - 6 + 2(6)
= 18 - 5 + 19 - 6 + 12
= 49 - 11
= 38 cm.