The light reflects off the mirror at the same angle that it hits it at. So the triangle formed by the beam and mirror is similar to the triangle formed by Kevin and the mirror.

Therefore, we can write and solve a proportion.

h / 10 = 6.25 / 3

h = 20.833

The beam is 20.833 feet tall.

4 0

3 years ago

Which is the graph of g(x) = [X + 3]?

Rudik [331]

Step-by-step explanation:

g(x) = [X + 3]? the answer is 1 =3x

6 0

3 years ago

Find the percent error in this situation<br> Estimated: 145<br> Actual value: 189

levacccp [35]

Answer:

-23.2

_____ _____

hello thre um ((_O_)) ((_O_))

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3 0

3 years ago

Please answer with process

laila [671]

$\mathsf{Given : a - b = 5}$

$\mathsf{Squaring\;on\;both\;sides,\;we\;get :}$

$\mathsf{\implies (a - b)^2 = 5^2}$

$\mathsf{\implies a^2 + b^2 - 2(a.b) = 25}$

$\mathsf{Given : a^2 + b^2 = 29}$

$\mathsf{\implies 29 - 2(a.b) = 25}$

$\mathsf{\implies 2(a.b) = 29 - 25}$

$\mathsf{\implies 2(a.b) = 4}$

$\mathsf{\implies (a.b) = 2}$

6 0

3 years ago