Answer:
47.2
Step-by-step explanation:
N + d = 21
0.5n + 0.10d = 1.35
5n + 10d = 135
d = 21-n
5n + 210 - 10n = 135
-5n = -75
n = 15
d = 6
Answer:
The greatest common factor of 169 and 81 is 1.
Step-by-step explanation:
9 squared is 81 and the greatest common factor of 169 and 81 is one. They have no other common factors. Please mark me brainliest and I hope this helps!
Answer:
slope = - 
Step-by-step explanation:
Calculate the slope m using the slope formula
m = 
with (x₁, y₁ ) = (- 5, 7 ) and (x₂, y₂ ) = (2, 5 )
m =
=
= - 