Answer:
The length of the case is 17 inches.
Step-by-step explanation:
A flute case is shaped like a rectangular prism with dimensions:
- height = 5 inches;
- width = 3 inches;
- length = x inches.
The volume of the case is 255 cubic inches.
Use formula for the volume of the rectangular prism:
Thus,
The length of the case is 17 inches.
A = L * W
L = 3x + 5
W = x - 2
A = (3x + 5)(x - 2)
A = 3x(x - 2) + 5(x - 2)
A = 3x^2 - 6x + 5x - 10
A = 3x^2 - x - 10 <====
David went about 7.94 miles east for they to be 13 miles apart.
Distance
The distance between two points is the amount of separation between the points.
Let O represent the starting point, D for David endpoint and J for John end point.
Using Pythagoras:
OJ² = 4² + 3²
OJ = 5 miles
OD + OJ = 13
OD = 8 miles
Using Pythagoras:
8² = 1² + East²
East = 7.94 miles
David went about 7.94 miles east for they to be 13 miles apart.
Find out more on distance at: brainly.com/question/24775607
Answer: it is 2
Step-by-step explanation: because 7 x 2 is 14
I think this is it x-y÷2=x+y÷4