Answer:

Step-by-step explanation:

<span>2(30)+2x=860
This is because the 4 sides of the rectangle add up to the perimeter.
The unknown side is x, and there are two of those, and there are also two sides of 30.
They all add up to the perimeter.
So:
2(30) + 2x = 860</span>
Answer:εδΑΒΓΒΕ
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Step-by-step explanation:
73hsay is a little bit too long and ∩679∨78ω8㏒∴≠÷±
Answer:
d is 5
Step-by-step explanation:
d is 5
Answer:
(x+5) and (x-7).
Step-by-step explanation:
The given equation is :

We need to write it in factored form.
We know that,
7×5 = 35 and 7-5 = 2
So,

Hence, the required factors are (x+5) and (x-7).