Answer:
and 
Step-by-step explanation:
First, we are told "sum of 5 times one number, x, and 4 times a second number, y, is 75":
(1)
Then, we are told "he sum of the two numbers is 18":
(2)
At this point we have our system of equations and now we are able to find the values of
and
.
So, let's begin by isolating
from (2):
(3)
Substituting (3) in (1):
(4)
Finding
:
(5) This is the value of 
Substituting (5) in (1):
(6)
Finding
:
(7)
(8) This is the value of 
Answer:
10 blocks
Step-by-step explanation:
Given

east
Required
Determine the shortest possible distance
To better explain my solution, I've added an attachment that illustrates her movement.
Using the attachment as a point of reference, the shortest distance is calculated by calculating the length of the hypotenuse using Pythagoras theorem.
So, we have:



Take positive square root of both sides


It’s A because (-2)2+(4)2-2(-2)+4(4)+8=0
-4+8+4+-16+8
(8+8) (-4+4) (-16)
16 -16 =0
Answer:
15/40
Step-by-step explanation:
