Answer:
No graph so we'll use the quadratic formula
x^2+x-4=0
a = 1
b = 1
c = -4
x = -1 +- sqr root (1^2 - 4 * 1 * -4) / 2
x = (-1 +- sqr root (1 +16) ) / 2
x1 = (-1 + sqr root (17)) / 2
x2 = (-1 - sqr root (17)) / 2
Step-by-step explanation:
The sale price of a model railroad set is $174. If it was marked down to 25% off of the original price, what was the original pr
2 answers:
You might be interested in
Answer : The correct option is, (A)
Step-by-step explanation :
First we have to calculate the volume of cylinder.
Formula used:
Volume of cylinder =
where,
r = radius = 3 cm
h = height = 18 cm (We are assuming that 3 solid spheres stacked to each other = 3 × diameter of each sphere = 3 × 2 × 3 = 18)
Volume of cylinder =
Volume of cylinder =
Now we have to calculate the volume of 3 solid spheres.
Formula used:
Volume of 3 spheres =
Volume of 3 spheres =
Volume of 3 spheres =
Volume of 3 spheres =
Now we have to calculate the amount of empty space within a cylinder.
Amount of empty space within a cylinder = Volume of cylinder - Volume of 3 spheres
Amount of empty space within a cylinder =
Amount of empty space within a cylinder =
Therefore, the amount of empty space within a cylinder is,