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3 years ago

Katie sorted these shapeswrit a sorting rule to tell haw katie sorted

Mathematics

1 answer:

kolbaska11 [484]3 years ago

5 0

It's 3 vertices, hope this helps!

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nadezda [96]

Answer:

I think d equation most. closely represents

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3 years ago

A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an

____ [38]

Answer: 70 meters.

Step-by-step explanation:

Observe the figure attached.

The distance between the walls is:

$DE=AD+AE$

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Both triangles are right triangles. Therefore, you can calculate the distance between the walls as following:

- Calculate the distance AD:

$cos\alpha=\frac{adjacent}{hypotenuse}\\\\cos(60\°)=\frac{AD}{60}\\AD=30m$

- Calculate the distance AE:

$tan\beta =\frac{opposite}{adjacent}\\\\tan(45\°)=\frac{40}{AE}\\\\AE=\frac{40}{tan(45\°)}\\\\AE=40m$

Therefore the distance between the walls is:

$DE=30m+40m=70m$

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3 years ago

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Which point on the number line below represents |11|?

sp2606 [1]

Answer:

Point D

Step-by-step explanation:

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3 years ago

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PLZZ HELPP FAST WILL GIVE MEDAL!!

Afina-wow [57]

8 5 8 5 hopefully its right i'm not good at this kind of stiff

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4 years ago

If a plane can travel 490 miles per hour with the wind and 430 miles per hour against the wind, find the speed of the wind and

zavuch27 [327]

let the speed of plane in still air be x and that wind be y

therefore:

x+y=490

x-y=390

next we solve for the values of x and y, first we add the above equations. This will give us:

2x=880

x=880/2

x=440 miles per hour.

substituting the value of x in one of the equations and solving for y we get:

440+y=490

y=490-440

y=50 miles per hour

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4 years ago