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Semmy [17]
3 years ago
7

Please Help! Geometry!

Mathematics
1 answer:
leonid [27]3 years ago
6 0

Step-by-step explanation:

Suppose AB is the 3- foot high access ramp that ends at point C 20 feet along the ground and

theta is the angle of depression from the start of 3 foot high ramp at point A

Now, in ∆ ABC

m<ACB= theta ( alternate interior angle)

Therefore,

\tan(theta) =  \frac{AB}{BC}

\tan(theta)  =  \frac{3}{20}

(theta) = tan⁻¹(3/20)

= 8.5°

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one vertex of a triangle is located at (0,5) on a coordinate grid after a transformation the vertex is located at(5,0) which tra
Alik [6]

Answer:

It's a rotation clockwise of 90 degrees about the origin.

Step-by-step explanation:

The given point moves from   y = 5 to x = 5 so it has passed through 90 degrees about the origin.

It's a rotation clockwise of 90 degrees about the origin.

6 0
3 years ago
سا (a) From the definition of derivatives determine dy÷dx if y = -2÷x​
harina [27]

Step-by-step explanation:

Given: y = -\dfrac{2}{x}

Derivative of a power function x^n:

\dfrac{d}{dx}(x^n) = nx^{n-1}

Therefore,

\dfrac{dy}{dx}=-2(-1)x^{-2} = \dfrac{2}{x^2}

3 0
3 years ago
A bag contains 8 purple marbles &amp; 12 green marbles. You choose one marble out of the bag without looking.
MrRissso [65]

Answer:

1. P(P) = 8/20 = 0.4

2. P(G) = 12/20 = 0.6

Step-by-step explanation:

Given;

Number of green marbles G = 12

Number of purple marbles P = 8

Total T = 12+8 = 20

The probability that you choose a purple marble P(P) is;

P(P) = number of purple marbles/total number of marbles

P(P) = P/T = 8/20 = 0.4

P(P) = 0.4

The probability that you choose a Green marble P(G) is;

P(G) = number of Green marbles/total number of marbles

P(G) = G/T = 12/20 = 0.6

P(G) = 0.6

6 0
3 years ago
Please help me
Nata [24]

Answer:

1 1/2

Step-by-step explanation:

2 2/3 - 1 1/6 = ?

The LCD here is 6.  Convert 2 2/3 so that the denominator is 6:

2 2/3 = 2 4/6

Then subtract 1 1/6 from 2 4/6:  We get 1 3/6, or 1 1/2

5 0
3 years ago
I NEED HELP
denpristay [2]
2 times a number minus 9 is less than or equal to 21. and in inequality form that’s: 2x - 9 >_ 21 and u make a number line and a closed circle on 15 and an arrow going right. i hope i understood your question right
7 0
4 years ago
Read 2 more answers
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