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alberto uses the steps below to solve the equation
which justifies step 6 of his work?
3* - 3 =
the addition property of equality
the identity property of addition
the multiplication property of equality
the identity property of multiplication
step 1:
x - 3 + 3 = 7 + 3
step 2: =x + 0 = 10
step 3:
x =
step 4: * = 2(10)
step 5: 1x = 20
step 6: x = 20

I gotcha bud, the answer is 4. the identity property of multiplication

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The identity property of multiplication

Step-by-step explanation:

If a, b and c are any real numbers,

By addition property of equality,

a = b ⇒ a + c = b + c,

By identity property of addition,

a + 0 = a,

By multiplication property of equality,

a = b ⇒ a × c = b × c,

By identity property of multiplication,

a × 1 = a

Thus, it is clear that,

'The identity property of multiplication' justifies Step 6 .

answer: 1 + 1 = 11

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet