Answer:
Elissa needs 4 quarts of paint, or 1 gallon.
Step-by-step explanation:
Elissa's room is in the shape of a rectangular prism. Assuming that she will only be painting the walls and not the floor or ceiling, you just need to calculate the area of the four walls - front and back and side to side. Based on the dimensions given, the area of Elissa's front and back walls are 8 ft x 9 ft or 72 ft² for each wall. Since there are two, we take that area times two: 72 x 2 = 144 ft².
Elissa's side walls are 8 ft x 13 ft or 104 ft² for each wall. Since there are two, we take this area times two: 104 x 2 = 208 ft².
To find the total area needed to paint, we add all four walls: 144 + 208 = 352 ft². Since a quart of paint covers 100 ft² and a gallon covers 400 ft², Elissa can either purchase 4 quarts of paint or 1 gallon to paint her bedroom.
none of your questions make sense
Answer:2
Step-by-step explanation:
F(x)=-10/x
The rule for the derivative of a quotient is
if f(x)=g(x)/h(x)
df/dx=((dg/dx)*h(x)-(dh/dx)*g(x))/(h(x))^2
In this case:
df/dx=(-1(-10))/x^2
df/dx=10/x^2, so df/dx(-12)
df/dx(-12)=10/(-12)^2
df/dx(-12)=10/144
df/dx(-12)=5/72
Answer:
Because he did his math wrong, you dont add, you subtract the whole thing
Step-by-step explanation:
15-9=6-2.65=3.35-1.35=2-3.48=-1.52
