$a(x) = 2(x+5)^2 -3\\\\~~~~~~~=2(x^2 +2 \cdot 5 \cdot x +5^2) -3\\\\~~~~~~~=2(x^2 +10x+25) -3\\\\~~~~~~~=2x^2 +20x +50 -3 \\\\~~~~~~~=2x^2 +20x +47\\\\\text{By comparing}~ 2x^2 +20x +47~ \text{with the standard form}~ ax^2 +bx+c,\\\\a=2,~ b = 20,~ c = 47$

7 0

1 year ago

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6(7s+9) simplified. Please include how you solved it!

Ilia_Sergeevich [38]

The answer: 42s+54

Explanation: (6)(7s+9) you break it up and do
(6)(7s)+(6)(9) which gets you the answer.

7 0

2 years ago

Marla had a piece of felt that is 1/3 of a large circle. She cuts the piece of felt in half from the center point of the circle.

Aloiza [94]

It would be 60 dgrees since half of 1/3 is 1/6 and a circle is 360 degrees so do 360/6 to get 60 degrees.

6 0

3 years ago