Answer:
B. 8.6
Step-by-step explanation:
Given:
Draw a right angled triangle ABC as as shown below.
From the triangle
,
Calculate the number of units from A to C and from C to B, we get
AC = 7 units and BC = 5 units.
Now using Pythagorean Theorem,

Taking square root on both sides, we get

Therefore, the distance between points A and B rounded to the nearest tenth is 8.6 units.
Answer:
Step-by-step explanation:
3(2x – 8)
3(2x) + 3(-8)
6x + -24
6x - 24
Hope this helps!
19+19+4.4+17.2=59.6 is the perimeter
One approach that might be a great help would be if you would look
at the choices ... those things at the bottom of the question that you
didn't give us.
-- One leg is 3 times the length of the other leg.
-- Any right triangle that has one leg three times as long as the other
leg is similar to this triangle.
I'll bet that if you look through the choices, you'll find one there.
You could use 10, 6 and 7.
Using ten would have them all equal 50, using 6 would have them all equal 30 and using 7 would have them all equal 35.
Hope this helps!