(4x + 3y)(4x − 3y) = (4x)^2 -12xy + 12xy - (3y)^2 =
16x^2 - 9y^2
Answer:
32%
Step-by-step explanation:
The slope of the road is measured as
slope =
= 
To express as a percentage multiply the fraction y 100% , that is
slope =
× 100% = 16 × 2 = 32%
To answer this multiply 3×7=21 and add 21+10=31. so it is 31/10 divided by 2. for that you do this...( top pic)