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2 years ago

Its asking to expand and simplify an expression for the area of this rectangle.

Mathematics

2 answers:

Anettt [7]2 years ago

7 0

Answer:

4x^2 + 11x - 20

Step-by-step explanation:

area is width X height
multiply the width (4x - 5) and the height(X + 4)
I always imagine a multiplication grid for this kind of problem, with X and +4 at the top and 4x and -5 going down, and then combine terms
you get 4x^2 + 11x - 20

atroni [7]2 years ago

5 0

Answer:

(4x-5)(x+4)

4x squared- 16x -5x - 20
4x squared-21x - 20

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3 years ago

The length of an arc of a circle is 7.34 units, and the measure of the corresponding central angle is 81 degrees. What is the ap

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Answer:

A. 5.19 units

Step-by-step explanation:

$\textsf{Arc length}=2 \pi r\left(\dfrac{\theta}{360^{\circ}}\right) \quad \textsf{(where r is the radius and}\:\theta\:{\textsf{is the angle)}$

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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