3.A 4. False you can save as much as you want. 5. A.
and the rest hmm idk
Answer:
Lisa will not be able to feed both tanks the same amount of food.
Step-by-step explanation:
This question is incomplete, here is the complete question :
"Lisa pet shop has 2 fish tank . Tank A contains smaller fish who were fed 1 gram of food each per day. Tank B contains larger fish who are fed 2 gram each per day. If tank B contains 2/3 the number of fish Tank A contains,will Lisa ever feed both tanks the same amount of food."
Let the number of fish in tank A = f
Lisa fed 1 gram of food each per day = f × 1 = f
So,the number of fish in tank B = 
Lisa fed 2 gram of food each per day = 
If both the tanks are fed with same amount of food then


⇒ 3f = 4f
⇒ 3 = 4
But 3 ≠ 4
Therefore, Lisa will not be able to feed both tanks the same amount of food.
x+4=3x
first subtract x from both sides(x-x and 3x-x)
4=2x
Now divide 2 from both sides (2x/2 and 4/2)
2=x
So x=2
Answer:
Step-by-step explanation:
16 cm3/s
2x - 5 = 7
2x = 7 + 5
2x = 12
2x/2 = 12/2
x = 6
to check:
2x - 5 = 7
2(6) - 5 = 7
12 - 5 = 7
7 = 7