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lora16 [44]
3 years ago
11

The ratio of the side lengths of a triangle is 10.5 :18 :22.5. The perimeter of the triangle is 408 centimeters. Determine wheth

er the triangle is a right triangle.
Mathematics
2 answers:
skad [1K]3 years ago
8 0
Ok.

The “correct way to use the info to answer this problem is:
Add the “ratio sides” 10.5 + 18 + 22.5 = 51
then decide what the scaling factor is: 51 times what is 408? Or 408 divided by 51 is what .
Answer is 8
So multiply each side length by 8 and use Pythagorean’s theorem
(remember that hypotenuse (c) is the longest side)
10.5 x 8 =84 84^2 + 144^2 = 180^2
18 x 8 = 144. 7056 + 20736 = 32400
22.5 x 8 = 180 27792 = not equal. So it’s not a rt. triangle

Realistically that used huge numbers that you don’t have to...
you could have just used Pythagorean’s Theorem on the ratio sides
10.5^2 + 18^2 = 22.5^2
110.25 + 324 = 506.25
434.25 = nope still doesn’t work
Elden [556K]3 years ago
3 0

Answer:

Step-by-step explanation:

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Juliette [100K]
The answer is 35400 :)
5 0
2 years ago
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Let's assume for a moment that we are standing at the origin and the positive y-axis points due North while the positive x-axis
steposvetlana [31]

Answer:

The coordinates of his position is (-6,-8).

Step-by-step explanation:

Consider the provided information.

Let's assume for a moment that we are standing at the origin and the positive y-axis points due North while the positive x-axis points due East.

North represents the positive y axis, then south will represents the negative y axis.

It is given that the east represents the positive x axis then west represents the negative x axis.

Sasquatch-o-meter tells us that Sasquatch is 6 miles West and 8 miles South of our current position.

6 miles west represents a x=-6 and also 8 miles south represents y=-8

Thus, the coordinates of his position is (-6,-8).

4 0
3 years ago
R^3 +4r^2-25r-100<br><br> Help
Marina86 [1]

Answer:

The zeroes in this equation are -5, -4, and 5

Step-by-step explanation:

In order to find these, you need to factor by splitting. For this, we separate out the two halves of the equation and pull out the greatest common factor of each. Let's start with the front end.

r^3 + 4r^2

r^2(r + 4)

Now the second half.

-25r - 100

-25(r + 4)

Since what is left in the parenthesis are exactly the same, we can use that parenthesis next to one with what we pulled out.

(r^2 - 25)(r + 4)

And we can further factor the first parenthesis using the difference of two squares

(r^2 - 25)(r + 4)

(r + 5)(r - 5)(r + 4)

Now that we are fully factored, set each parenthesis equal to 0 and solve for x.

r + 5 = 0

r = -5

r - 5 = 0

r = 5

r + 4 = 0

r = -4

7 0
3 years ago
Please help I really need help
Rasek [7]
This is not a risible  
7 0
3 years ago
What is the measure of ∠L?
otez555 [7]
<h3>Answer:  72.54</h3>

====================================================

Explanation:

We set up a cosine ratio, since we want to connect the adjacent and hypotenuse. Then we'll use the inverse cosine, which is also known as arccosine, to isolate the angle value.

This is what your steps could look like:

cos(angle) = adjacent/hypotenuse

cos(L) = LM/LN

cos(L) = 18/60

cos(L) = 0.3

L = arccos(0.3)

L = 72.542396876278 which is approximate

L = 72.54 degrees approximately

Make sure your calculator is in degree mode.

8 0
2 years ago
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