Answer:
-147
Step-by-step explanation:
Paxton received the same score on each turn in a board game. His score on each turn was −21. He had 7 turns.
basically 7 x -21
=
-147
Answer: x=2
Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.
Hope this helps you out! ☺
Answer:
The smaller pipe can fill the tank in 6 hours alone.
Step-by-step explanation:
Let us assume that the smaller pipe can fill the tank alone in x hours and the larger pipe fills it in (x - 3) hours.
Therefore, the smaller pipe in 1 hour can fill part of the tank.
Again the larger pipe in 1 hour can fill part of the tank.
So, if both the pipes are open then, in 1 hour they can fill ( part of the tank.
Therefore, they can fill the full tank in hours.
As per given condition, we can write
⇒ x² - 3x = 4x - 6
⇒ x² - 7x + 6 = 0
⇒ (x - 6)(x - 1) = 0
⇒x = 6 or x = 1
But x can not be less than 2 hours.
So, x = 6 hours.
Therefore, the smaller pipe can fill the tank in 6 hours alone. (Answer)
Answer:
90%
Step-by-step explanation:
72/80=0.9 so as a percentage that would be 90%
Answer:
9 servings
Step-by-step explanation:
4.5%.5=9 so the cook made 9 servings.