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3 years ago

If a light ray is relflected off the shiny surface at 170 degrees, at what angle did the light ray first strike the surface?

Mathematics

1 answer:

tiny-mole [99]3 years ago

3 0

Answer:

10 degrees

Step-by-step explanation:

take 180-170

and then 10 is your answer

you only need to try to get to 180

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What’s the answer to this equation?

Tresset [83]

Answer:

Part A) The graph in the attached figure

Part B) see the explanation

Step-by-step explanation:

Part A) Graph the function

we have the quadratic function

$y=3x^2-12x-36$

This is a vertical parabola open upward

The vertex is a minimum

using a graphing tool

The graph in the attached figure

Part B) What are the values of a, b and c?

we know that

The values of a and b represent the x-intercepts of the quadratic equation

The x-intercepts are

(-2,0) and (6,0)

$a=-2\\b=6$

Find the value of c

we know that

The x-coordinate of the vertex in a vertical parabola is equal to the midpoint of the roots

The value of c is equal to

$c=\frac{a+b}{2}$

substitute the given values

$c=\frac{-2+6}{2}=2$

see the attached figure

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3 years ago

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HACTEHA [7]

M=months
400+20m=100+40m
300=20m
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After 15 months total savings of two options are the same.
Total savings=400+20*15=700 with either options

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3 years ago

Plug x= 2 into<br> 2x^4 - 3x^2 +5

GaryK [48]

Answer:

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Step-by-step explanation:

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3 years ago

Could someone help me fast I really need the help.

AveGali [126]

B. 5.036

D. 41x + 11y

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answer on 12 square units

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2 years ago

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