When % of a full tank of water is used, there is still 600 liter left in the tank. How much water can the tank hold?

a. 900 liter
b. 1500 liter
c. 30000 liter
d. 8000 liter​

a

Step-by-step explanation:

because if there is 600 just add 300 to get 900 so that is your anwser

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this