8+4=12
9+7=16
12^2=144
16^2=256
144+256=400
square root of 400 is 20
therefore the distance from (8, -7) to (-4,9) is 20.
Answer:
B 
Step-by-step explanation:
Formula of straight line in Point slope form

Here

therefore equation of line having slope 5 and passing through point )1, 9) is given as

Answer:
When squaring a number it is essentially taking a number and multiplying it by itself. For example, 5^2 is 5×5 (=25).
26 , 8-6=2 so you do 24+6
Answer:
C
Step-by-step explanation:
Lucky guess I guess.