3 years ago

Graph the equation below by plotting the y-intercept and a second point on the line.

Mathematics

1 answer:

Solnce55 [7]3 years ago

7 0

I don’t know if this helps but…

Slope: 2/3

Y-intercept: (0,-4)

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find the length and width of a rectangle that has an area of 968 square feet and whose perimeter is a minimum

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3 years ago

Evaluate the exponential expression: (2x)2nd power −3y2nd power =___, if x = 5 and y = 3.

damaskus [11]

ANSWER

A. 73

EXPLANATION

The given expression is

$(2{x})^{2} - 3{y}^{2}$

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3 years ago

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jolli1 [7]

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2 years ago

Find the area of an equilateral triangle (regular 3-gon) with the given measurement.

kow [346]

If the perimeter is 9 inches, each side is 3 inches.

The height of an equilateral triangle splits the triangle in two right sub-triangles: for example, consider a triangle ABC and the height AH starting from A, perpendicular to BC.

The triangle AHC is a right triangle, whose legs are AH and HC, and whose hypotenuse is AC.

AH is half the side, and AC is a side. So, we can use the Pythagorean theorem to find the height:

$AH = \sqrt{AC^2-AH^2}=\sqrt{l^2-\dfrac{l^2}{4}}=\dfrac{\sqrt{3}l}{2}$

So, the area is

$\dfrac{AH\cdot HC}{2} = \dfrac{l\cdot\frac{\sqrt{3}l}{2}}{2} = \dfrac{l^2\sqrt{3}}{4} = \dfrac{9\sqrt{3}}{4}$

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4 years ago