Answer:
95-27.50= 67.50 inches of ribbon
Answer:
The height of this cube-shaped water tank is 35 m.
Step-by-step explanation:
The formula for the volume of a cube of side length s is V = s^3.
Here V = s^3 = 42,875 m^3.
Taking the cube root of both sides, we obtain the side length, s:
s = ∛(42,875 m^3) = 35 m
The height of this cube-shaped water tank is 35 m.
Answer:
y = 2x
Step-by-step explanation:
Maria uses 2 centimeters of tape for each present she wraps, and we want a equation that shows the relationship between the number of presents x and the tape used y. To do this, we can establish a rule of three with the information given:
1 present wrapped -> 2 centimeters of tape
x presents wrapped -> y centimeters of tape
1/x = 2/y
x = y/2 -> y = 2x
From this relation, we know that to make x presents, Maria will use 2x centimeters of tape.
Answer:
20ln(3)
Step-by-step explanation:
Put 15 for A and solve for t.
15 = 45e^(-.05t)
15/45 = 1/3 = e^(-.05t) . . . . divide by 45
ln(1/3) = -.05t . . . . . . . . . . . take natural logs
20ln(3) = t . . . . . . . . . . . . . . multiply by 20, simplify
It will take 20·ln(3) years for the area to decrease to 15 km^2.
Answer:
Step-by-step explanation:
