X=301/275
y=13/220
SolutionPlease find the attached image to get the complete solution.
I used online calculator to solve the system
Answer:
The population density is 0.364 fish per gallon.
Step-by-step explanation:
The population density can be defined as the number of individuals (in this case, small tropical fish) per unit of area or volume. In this case, the volume of the aquarium (55 gallon).
The density can be calculated then as:

The population density is 0.364 fish per gallon.
Answer:
C. 210
Step-by-step explanation:
Plugging it in directly
30/14=2.14 (not an integer)
140/6=23.33 (not an integer)
210/6=35
210/10=21
210/14=15
all of the above result in integers, so the answer is C.
D is not even checked because it is larger than 210
Answer:
x= 175°
Step-by-step explanation:
angles in a triangle add up to 180 degrees
85 + 90 = 175
180 - 175 = 5 (the missing angle not x)
angles on a straight line add up to 180 degrees
180 - 5 =175
Answer:
He can but 6 ads
Step-by-step explanation:
how i thought of it was what times 700 hundred gives me 4,200 and i used the math that i have been taught and put together 6