D because y (time spent) = 50 × x (distance travelled)
225÷4.5=50
x÷y=50
Answer:
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Step-by-step explanation:
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Z = 17.
2(4z -8) = 120
8z -16 = 120
z -2 = 15
z = 17
That's the associative property of addition
it is normally written as
(a+b)+c=a+(b+c)
which is like what you have
(17+4)+9=17+(4+9)