There are 6 rows with 18 chairs in each row. in the fenter of the chairs, 4 rows of 6 chairs are brown. the rest of the chsirs are blue. how many chairs are blue?

x=12 units bd= 10 units

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.