Answer:
B. X+6.4<9.9
Step-by-step explanation:
The sum of a number is represented by X. So X and 6.4 is X+6.4. Is less than 9.9, so <9.9. You get X+6.4<9.9.
#11
Perimeter:
P = 2(W + L)
P = 2(3.5 + 6.5)
P = 2(10)
P = 20 units
Area:
A = WL
A = 3.5 * 6.5
A = 22.75 square units
8
Take the biggest value and smallest value, and subtract the smallest value from the biggest value:
9-1=8