40 - 12 = 28
28 / 40 = 0.7
0.7 * 100 = 70%
The percentage decrease is 70%.
Answer:
Jeff mows 9 yards of lawn in 30 minutes
Step-by-step explanation:
The equation that models the amount of time (t) in minutes it takes Jeff to mow an average sized yard is 
, where n is the number of yards he mows.
To find the number of yards Jeff mows in 30 minutes, we set the equation to 30 and solve for n.
Add -12 to both sides:
Divide both sides by 2
Hence Jeff mows 9 yards of lawn in 30 minutes.
Notice the word LINE in COLLINEAR. <span>Collinear points are points that lie ON A LINE. Any two points are always collinear because you can always connect them with a straight line.
Notice the word PLANE in COPLANAR. </span> <span>A group of points that lie IN THE SAME PLANE are coplanar. Any two or three points are always coplanar.
I hope you get the answer you needed.
</span>
Answer:
Cantidad de raciones= 8.75 raciones
Step-by-step explanation:
Dada la siguiente información:
Para hacer una ración de puré de papa se necesita 1/5 de kg.
<u>Vamos a pasar las cantidades a décimales:</u>
Ración puré= 0.2kg
Kg de papa= 7/4= 1.75 kg
<u>Ahora, dividimos la cantidad total por la cantidad unitaria:</u>
Cantidad de raciones= 1.75/0.2
Cantidad de raciones= 8.75 raciones
