25-18=7
50+7=57
86-57=29
She started with 29 dollars
Check your work:
29+25=54
54-18=36
36+50=86
-3.2x - 0.8 = 4.5
+ 0.8 + 0.8
-3.2x = 5.3
-3.2 -3.2
x = 1.65625
Answer:
I do not know the answer but I think it is (1,0) x (-3,4)
Step-by-step explanation:
Answer:
The Commutative Properties of Addition and Multiplication ... in an addition expression can be grouped in different ways without changing the sum. ... Mathematicians often use parentheses to indicate which operation should be done ... Rewrite 7 + 2 + 8.5 – 3.5 in two different ways using the associative property of addition.
Step-by-step explanation:
I learned this and i still know it. I dont have a explanation