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Airida [17]
4 years ago
5

On a cloudy day, Yong Sun needed to know the height of a window in a building. Yong Sun positioned a mirror on the ground betwee

n herself and the building so that when he looked in the mirror, she saw the window. If the mirror was 22.88 cm from her feet and 34.15 m from the base of the building and Yong Sun's eye was 1.89 m above the ground, how high up on the building was the window located? Round to the nearest meter.
Mathematics
1 answer:
const2013 [10]4 years ago
4 0
Its a ratio problem

height/34.15 = 1.89/.2288
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Is the pythagorean theorem true for all similar triangle
mojhsa [17]
False because you can only use the Pyth. Theorem on right triangles which may not necessarily be ALL similar triangles.
6 0
3 years ago
4 Points
Vladimir [108]

Answer:

35

Step-by-step explanation:

One is given the following function (y=3x+5). The given problem asks one to find the output of the function when the input is (10). Keep in mind, a general rule for dealing with functions is that, when present, the variable (x) represents the input. Whereas the variable (y) represents the output. Thus, if one were to substitute (10) in place of (x), and simplify: the result one would get is the output. Apply this idea to the given scenario:

y=3x+5

y=3(10)+5

y=30+5

y=35

4 0
3 years ago
Please answer this i dont understnad
serg [7]
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7 0
4 years ago
Please show working out thanks
IgorLugansk [536]

Answer:

10m x 15m

Step-by-step explanation:

You are given some information.

1. The area of the garden: A₁ = 150m²

2. The area of the path: A₂ = 186m²

3. The width of the path: 3m

If the garden has width w and length l, the area of the garden is:

(1) A₁ = l * w

The area of the path is given by:

(2) A₂ = 3l + 3l + 3w + 3w + 4*3*3 = 6l + 6w + 36

Multiplying (2) with l gives:

(3) A₂l = 6l² + 6lw + 36l

Replacing l*w in (3) with A₁ from (1):

(4) A₂l = 6l² + 6A₁ + 36l

Combining:

(5) 6l² + (36 - A₂)l +6A₁ = 0

Simplifying:

(6) l² - 25l + 150 = 0

This equation can be factored:

(7) (l - 10)*(l - 15) = 0

Solving for l we get 2 solutions:

l₁ = 10, l₂ = 15

Using (1) to find w:

w₁ = 15, w₂ = 10

The two solutions are equivalent. The garden has dimensions 10m and 15m.

3 0
3 years ago
At a fudge shop, they cut a sheet of fudge into one-ounce pieces.
il63 [147K]

Answer:

a

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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