Answer:
0.9 x 81
Step-by-step explanation:
0.9 is actually 0.90 and 90 is greater than 75
Answer:
a.(-b) ( third choice)
explanation:
-a+b - there is no plus sign for -a.b.
not -a+b
(-a)(-6)=6a (-negative sign and -negative sign=+positive sign)
Yes because you only need a 90 degree to become a right
