Which is the standard form for this number? (9 x 10) + (3 x 1) + (5 x 1 10 ) + (6 x 1 1,000 )

66,643

Step-by-step explanation:

9*10=90

3*1=3

5*110=550

6*11000=66000

66000+550=66550 +90=66640 +3=66643

true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation:

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points