In order to find the amount he spent, you must add up the total costs he spent to decorate.
148.65
+52.75
+29.33
_______
?
Which means, he spent $230 to decorate his bedroom.
AB=9
AC=`12
BC=x=?
ABC is a triangle with 90 degree
x2=(9)2+(12)2
x2=81+144
x2=225
x=15 so the distance between the points given is 15
8.66, you divide 12.99 into 3 and then multiply the result which is 4.33 by 2
11/50=1.1/5=0.22
They are indeed equivalent.
