false, 2(x+3) does not equal 2x+3
2(x+3) = 2x+3
2x+6 = 2x+3
6≠3
Answer:
equation :water remaining in pool after 30 mins= 0.027X
answer = 67.5 Gallon
Step-by-step explanation:
Given
quantity of water in pool = 2500 gallon
percentage of water lost every 10 mins = 70%
therefore percentage of water remaining in pool = (100- 70)% = 30%
Let the quantity of water in pool be X gallon
% of water remaining in gallon after 10 mins = 30% of X = 0.3X
% of water remaining in gallon after another 10 mins = 30% of water at 10 mins = 30% of 0.3 X = 0.3 * 0.3X = 0.09 X
% of water remaining in gallon after another 30 mins = 30% of water present at 20 minutes = 30% of 0.09 X = 0.3 * 0.09X = 0.027X
Therefore equation of water remaining after 30 mins is = 0.027 X
Substituting value of initial quantity of water in the above equation we get the volume pf water remaining in pool after 30 mins = 0.027 * 2500
= 67.5 gallons
Answer:
x = -1
Step-by-step explanation:
2 (x - 5) -6 = - 18
2 (x - 5) = - 12
x - 5 = - 6
x = - 1
Simplified to nearest whole number = 79
hope this helps:)
