16x2=32
21x2=42
32+42=54
the perimeter is 54
Hey there :)
( 5y + 9 )( 6y - 1 )
We need to use FOIL to expand, that is
First Terms
Outer Terms
Inner Terms
Last Terms
First Outer Inner Last
( 5y )( 6y ) + ( 5y )( - 1 ) + 9 ( 6y ) + 9 ( - 1 )
30y² - 5y + 54y - 9
Combine, if any, the like-terms
30y² + 49y - 9
Answer:
b = 2
Step-by-step explanation:
3b1b-8 = 4
+8 +8
3b1b = 12
3b^2 = 12
/3 /3
b^2 = 4

b = 2
10x^2y^-2 = 10 x (-1)^2 x (-2)^-2 = 10 x 1 x 1/4 = 10/4 = 2 1/2