<h2>
Greetings!</h2>
Answer:

Step-by-step explanation:
You need to remember the following equation:

Where a and b is the lengths of the two sides and c is the hypotenuse.
So simply plug these values into this:

36 + 49 = h^2
36 + 49 = 85
So the hypotenuse is the square root of 85:

<h2>Hope this helps!</h2>
81.56+n-2.55=0
81.56+n=2.55
n=2.55-81.56
n=-79.01
Answer:
a
Step-by-step explanation:
Answer:
a) 7 + (-4) = 3
b) (-6) + (-3) = -9
c) 2 -(-6) = 8
d) (-8) - (-13) = 5
Step-by-step explanation:
a) 7 + (-4)
= 7 + (-4)
= 3
b) (-6) + (-3)
= -6 - 3
= -9
c) 2 - (-6)
= 2 + 6
= 8
d) (-8) - (-13)
= -8 + 13
= 5