Answer:
4 cm
Step-by-step explanation:
If x is the length of the side of the square (in cm), then the area of the base is ...
1344 = (40 -2x)(50 -2x)
336 = (20 -x)(25 -x) . . . . . divide by 4
336 = x^2 -45x +500
Subtracting 336 gives ...
x^2 -45x +164 = 0
(x -41)(x -4) = 0 . . . . . . . factor
x = 4 . . . . . . . . the dimension must be less than 20
The length of the sides of the squares is 4 cm.
_____
A graphing calculator makes short work of it.
This is your answer.....
Given ::::
Radius of pipe = 14 cm.
If we wrap ... then it means that we cover the circumference...
So circumference = 2πr
= 2 × 3.14 × 14
= 87.92
But according to the question....
The tape is to be wrapped twice.....
so...
= 2 × 87.92
= 175.84 cm.
Hence the length of tape required is
175.84 m.
Your answer is b. -1
the line is going down so it's negative and it's going down one grid block each time it goes down
Pick 2 sets of points....any 2 sets
(25,-8),(30,-10)
now we use the slope formula : (y2 - y1) / (x2 - x1)
now we label our points...
(25,-8).....x1 = 25 and y1 = -8
(30,-10)...x2 = 30 and y2 = -10
now we sub....play close attention to ur signs
slope = (-10 - (-8) / (30 - 25) = (-10 + 8) / 5 = -2/5 <== ur slope