Answer:
Step-by-step explanation:
Given :
...................... equation 1
........................ equation 2
solving the system of linear equation by substitution method , substitute equation 1 into equation 2 , that is
collect the like terms
therefore :
substitute into equation 1 to find the value of y , that is
Therefore :
Answer:
160/32= 5
5*5= 25 mm
Step-by-step explanation:
5 mm is how many millimeters represents the kilometers.
I hope this helps!
Answer: d y=2
Step-by-step explanation:
Let n = number of hikers
y = number of slices of bread per sandwich= 2
x = number of sandwiches for each hiker = 3
T = total number of slices of bread used for "n" hikers
The expression below represents the total number of slices of bread used for "n" hikers:
T = 2 slices *3x sandwiches *n hikers
Answer:
3 small dogs
Step-by-step explanation:
Let s stand for small dogs and L stand for large dogs. Set up a system of equations and solve.
5s + 8L = 55
s + L = 8
5s + 5L = 40
3L = 15
L = 5
s + 5 = 8
s = 3