7/8*8/9 = (7*8)/(8*9)
Since we have an 8 both above and below, we can erase it, and so the answer is 7/9
Answer: 4.6 horas.
Step-by-step explanation:
Podemos calcular el tiempo necesario por una llave:
si sabemos que se llena en 8 horas con 4 llaves, entonces una sola llave va a tardar 4 veces 8 horas en llenar el tinaco, es decir, una sola llave tarda:
4*8h = 32 horas
ahora, si usamos 7 llaves, el tiempo necesario va a ser un septimo de eso:
(32 h por llave)/(7 llaves) = 32/7 horas = 4.6 horas.
The formula for slope is 
In this case:
so...
-1 <<<The slope
Hope this helped!
~Just a girl in love with Shawn Mendes
A material that doesn’t conduct well would be referred to as an insulator because it keeps the heat/electricity in.
You don't have enough math yet to be able to derive the formulas,
so you just have to memorize them:
Area of a circle = (pi) x (radius of the circle)²
Area of a square = (the length of one side of it)²
You may think you can't memorize them, but that'sexactly
what homework is for.
Take ten circles of different sizes and find the area of each one.
Then take ten squares of different sizes and find the area of each one.
You'll remember the formulas for the rest of your life. I guarantee it.
In fact, I'd be very surprised if you're in high school math now and you haven't
already done this for homework.
Let me rephrase that: I'd be very surprised if you're in high school math now
and this hasn't already <em>been assigned</em> as homework.
