9514 1404 393
Answer:
(x, y) = (2, -6)
Step-by-step explanation:
Subtract the first equation from the second.
(8x -2y) -(5x -2y) = (28) -(22)
3x = 6
x = 2
Substitute this into either equation and solve for y.
8(2) -2y = 28
8 -y = 14 . . . . . . . . divide by 2
y = 8 -14 = -6 . . . . add y-14 to both sides
The solution is (x, y) = (2, -6).
_____
I like a graphing calculator for a quick solution to such problems.
The volume formula of a pyramid is:
V =
x length x width x height
The given are
Length = 24 cm, Width = 18 cm, Height = 35 cm
Substitute the values to find the volume
V =
x 24 x 18 x 35
V = 5040 cm³
D
An acute angle is less than 90 degrees
Step-by-step explanation:
Length of rectangular park = 175 m
Breadth of rectangular park = 150 m
Perimeter of park = 2 x (length + breadth)
= 2 x (175 + 150)
= 2 x 325 = 650 m
Since, cost of fencing park per meter = = Rs. 12
Therefore, cost of fencing park of 600 m = 12 x 650 = Rs. 7,800
Square park=250m
Perimeter of the square park x 4
=250x4
=1000m
So, the cost of the fencing at the park would have a rate of 20 per m = 1000x20
=20000
