Answer:
18) 6x^2-7x-5
19) 20x^2+17x-63
20) 18x^2-20x+2
21) 5x^2+42x+16
Step-by-step explanation:
Perimeter=length×breadth
18) (3x-5)(2x+1)
=6x^2+3x-10x-5
=6x^2-7x-5
19) (4x+9)(5x-7)
=20x^2-28x+45x-63
=20x^2+17x-63
20) (18x-2)(x-1)
=18x^2-18x-2x+2
=18x^2-20x+2
21) (5x+2)(x+8)
=5x^2+40x+2x+16
=5x^2+42x+16
rate of change as in the gradient??
if yes then the formula would be rise over run, so y over x, therefore 1/3
Answer:
17.5 m
Step-by-step explanation:
3.75 x 4.667 etc.
17.5
(I used a calculator)
Answer:
He has paid 5600 by the end of the year
your equation is: y=300x+2000
Step-by-step explanation:
x=12 because there is 12 months in a year
y=300(12)+2000
y=3600+2000
y=5600
