There are 23 sharks and 7 octopi in the aquarium
- Let the number of sharks in the aquarium be x
- Let the number of octopi in the tank be y
If the total number of animals in the tank is 30, therefore;
- x + y = 30 ....................... 1
If the total number of legs in the tank is 171 with starfish having 5 legs and Octopus having 8 legs, the required expression will be:
- 5x + 8y = 171 ................ 2
From equation 1, x = 30 - y ................... 3
Substitute equation 3 into 2 to have:
5(30-y) + 8y = 171
150 - 5y + 8y = 171
3y = 171 - 150
3y = 21
y = 7
Recall that x = 30 - y
x = 30 - 7
x = 23
Hence there are 23 sharks and 7 octopi in the aquarium
Learn more on simultaneous equation here: brainly.com/question/148035
Answer:
0.23
Step-by-step explanation:
2.3% = 0.023
So 0.23*100=23% therefore larger than 2.3%
Any questions feel free to ask. Thanks
X = y - 8
Step by step
Y = x + 8
x + 8 = y
-8 -8
x = y - 8
Answer:
ask your teacher
Step-by-step explanation:
Answer: do a proportion
Step-by-step explanation:
So it would be a number over a number and equals X over a number.