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Tcecarenko [31]
3 years ago
11

The length of a rectangle is 3 times as big as the width. If beth increases each dimension by 4, write an expression to represen

t the new area, a, of the rectangle.
Mathematics
1 answer:
sdas [7]3 years ago
4 0

Answer: See explanation

Step-by-step explanation:

Let the width of the rectangle be x.

The length of a rectangle is 3 times as big as the width. Length = 3x

New width = x + 4

New length = 3x + 4

The new area will be:

a = (3x + 4)(x + 4)

a = 3x² + 12x + 4x + 16

a = 3x² + 16x + 16

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1 year ago
Help, I don’t understand this DeltaMath question
djyliett [7]
I can use the angle and the length of JH to find the length of IJ.

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tan(52) = 4.2/x
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The roots would be x=-5 and x=-4 but with that website you just do -5 and -4
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