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Bogdan [553]
3 years ago
13

Ap Stats can someone please explain how I can solve and answer this.

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
6 0

Answer:

just substitute x for 5 and then solve and then substitute x for -1 and solve and subtract the two answers you get

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First answer I will give you brainleyist
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Answer: C 6 cm
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2 years ago
In triangle $ABC$, let angle bisectors $BD$ and $CE$ intersect at $I$. The line through $I$ parallel to $BC$ intersects $AB$ and
Umnica [9.8K]

Answer:

41

Step-by-step explanation:

If you work through a series of obscure calculations involving area and the radius of the incircle, they boil down to a simple fact:

... For MN║BC, perimeter ΔAMN = perimeter ΔABC - BC = AB+AC

.. = 17+24 = 41

_____

Wow! Thank you for an interesting question with a not-so-obvious answer.

_____

<em>A little more detail</em>

The point I that you have defined is the incenter—the center of an inscribed circle in the triangle. Its radius is the distance from I to any side, such as BC, for example.

If we use "Δ" to represent the area of the triangle and "s" to represent the semi-perimeter, (AB+BC+AC)/2, then the incircle has radius Δ/s. The area Δ can be computed from Heron's formula by ...

... Δ = √(s(s-a)(s-b)(s-c)) . . . . where a, b, c are the side lengths

For this triangle, the area is Δ = √38480 ≈ 196.1632 units². That turns out to be irrelevant.

The altitude to BC will be 2Δ/(BC), so the altitude of ΔAMN = (2Δ/(BC) -Δ/s). Dividing this by the altitude to BC gives the ratio of the perimeter of ΔAMN to the perimeter of ΔABC, which is 2s.

Putting these ratios and perimeters together, we get ...

... perimeter ΔAMN = (2Δ/(BC) -Δ/s)/(2Δ/(BC)) × 2s

... = (2/(BC) -1/s) × BC × s = 2s -BC

... perimeter ΔAMN = AB +AC

8 0
2 years ago
When Meriden made a cake she used a recipe calling for 3/4 cup of sugar. She was planning to make a huge cake for a family get-t
soldi70 [24.7K]
Meriden would need 2 1/4 cups of sugar because 3*3/4=2 1/4
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3 years ago
Please please help!!!!
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Answer:

4.75

Step-by-step explanation:

4 0
2 years ago
Can you guys help me out pls
maks197457 [2]
D. 1.0002

Probabilities can only go up to 100%, or 1. 1.0002 is greater than 1.
5 0
3 years ago
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