3 years ago

What is it !, help !

Mathematics

1 answer:

Gala2k [10]3 years ago

7 0

Answer:

an isosceles triangle

Step-by-step explanation:

it has two equal sides so this is isosceles triangle

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When no unit is given for an angle, what unit must be used?

Pachacha [2.7K]

I think you are looking for degrees.

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3 years ago

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W-1/2=-2/5 solve for w

tino4ka555 [31]

Answer:

-9/10

Step-by-step explanation:

w-1/2=-2/5

w=-2/5-1/2

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4 years ago

There are 2,100 bacteria in a circular petri dish. The dish has a radius of 40 millimeters. What is the approximate population d

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A petri dish is simply a circle; thus, we use the formula of the area of the circle which is πr^2.
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As John walks 16 ft towards a chimney, the angle of elevation from his eye to the top of the chimney changes from 30° to 45°. Id

levacccp [35]

ANSWER

The height is $22ft$

EXPLANATION

Let the height of the chimney be x.

$\tan(45 \degree) = \frac{x}{y}$

$1 = \frac{x}{y}$

$x = y$

$\tan(30 \degree) = \frac{x}{16+ y}$

$\frac{ \sqrt{3} }{3} = \frac{x}{16 + y}$

Cross multiply

$\sqrt{3} (16 + y) = 3x$

$16 \sqrt{3} + y \sqrt{3} = 3x$

Put

$y = x$

into the equation;

$16 \sqrt{3} + x \sqrt{3} = 3x$

Group similar terms:

$16 \sqrt{3}= 3x - x \sqrt{3}$

$16 \sqrt{3}= (3 - \sqrt{3})x$

$\frac{16 \sqrt{3} }{3 - \sqrt{3} } = x$

$x=21.856$

The height of the chimney to the nearest feet is 22

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3 years ago

I am struggling on how to rationalize the denominators and simplify the problem.

Furkat [3]

Hi yea you need help

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4 years ago

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