Alberto uses the steps below to solve the equation 1/2x-3 = 7.

Step 1:1/2x-3+3=7+3
Step 2:1/2x+0=10
Step 3:1/2x=10
Step 4: 2 (1/2)x = 2(10)
Step 5: 1x=20
Step 6: x = 20

Which justifies Step 6 of his work?

the addition property of equality
the identity property of addition
the multiplication property of equality
the identity property of multiplication

4x and 6y

im not sure though

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

answer: 10 meter

step-by-step explanation:

need details

hello, there is a new name in town and that's the human spider!

answer: d.) the total number of protons and neutrons is 15

merry christmas!

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your friendly neighborhood human spider! .