1 year ago

If y = 9 inches, z = 14 inches, h = 5 inches, and w = 4 inches, what is the area of the object?

Mathematics

1 answer:

vekshin11 year ago

7 0

Answer:

126

Step-by-step explanation:

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bulgar [2K]

It has a y intercept of 1 rather than 0.

It is shifted one unit up.

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3 years ago

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Find the area and the circumference of a circle with diameter 3 ft.

Zigmanuir [339]

Step-by-step explanation:

circumference of a circle

2×pi×r

area of a circle

pi×r²

r (radius) = diameter/2 = 1.5ft

we shall assume pi to be 3.14

circumference is

2×3.14×1.5 = 3.14×3 = 9.42 ft

area is

3.14 × 1.5² = 3.14×2.25 = 7.065 ft²

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3 years ago

Convert the rectangular coordinates (-9, 3V3) into polar form. Express the angle

Whitepunk [10]

Answer:

$(6\sqrt{3},\,\frac{5\pi}{6})$

Step-by-step explanation:

The radius r can be found from the relationship

$r^2=x^2+y^2\\r^2=(-9)^2+(3\sqrt{3})^2\\r^2=81+27=108\\r=\sqrt{108}\\r=6\sqrt{3}$

The point is in Quadrant II (-, +), so use the inverse cosine function to find the angle.

$\cos{\theta}=\frac{x}{r}=\frac{-9}{6\sqrt{3}}\\\cos{\theta}=-\frac{9}{6\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}}\\\cos{\theta}=-\frac{9\sqrt{3}}{6\cdot3}\\\cos{\theta}=-\frac{\sqrt{3}}{2}\\\\\cos^{-1}\frac{-\sqrt{3}}{2}}=\frac{5\pi}{6}$

See the attached image.

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3 years ago

Identify the vertex of the graph. Tell whether it is a minimum or maximum.

Olegator [25]

Answer:3333333333333333Step-by-step explanation:

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3 years ago

Rationalize the denominator and simplify. √a+1 - 2 / √a+1 + 2

goldfiish [28.3K]

Answer:

5+a-4√a+1 / a-3

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2 years ago