PLS HURRY THIS IS REALLY HARD!(FOR ME)

Mathematics

1 answer:

babunello [35]3 years ago

8 0

Answer:

She needs about 398 more dollars

Step-by-step explanation: The price of the whiteboard is $989. Add the money from what she collected and the fundraising. 485+106 then you take that and subtract it from 989.

Hope this helped!

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Triangle ABC is similar to Triangle DEF. What is the measure of angle DEF? Refer to image, please show work :)

Ne4ueva [31]

Remember, all the interior angles of a triangle equals 180.
So in triangle ABC, it already gives us two out of the three angles.

First, we add 52 and 36 and that gives us 88.

Now we subtract 88 from 180.

180 - 88 = 92

So that means that ∠ABC is 92°

Now we have to look at triangle DEF.
The equation says that triangle DEF is similar to triangle ABC.

Looking at the picture, triangle DEF is smaller and is flipped upside down.

So that means that ∠ABC ≈ ∠DEF

In similar triangles, the measurements of angles does NOT change. Just the side length.

So since ∠ABC = 92° that means that ∠DEF = 92°

4 0

3 years ago

A man 6 feet tall casts a shadow that is 11 feet long. A building casts a shadow of 139 feet long. The building is tall. Round y

dmitriy555 [2]

Given:

Height of man = 6 ft

Height of man's shadow = 11 feet

Height of building's shadow = 139 feet

To find:

The height of the building.

Solution:

We know that the heights of the objects and there shadows are always proportional.