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Burka [1]
4 years ago
15

For any line, if you draw two right triangles using the line as the hypotenuse, can the triangles be congruent? Why or why not?

Do they have to be congruent? Why or why not?
ANSWER ALL OF THE QUESTIONS OR DONT ANSWER AT ALL THANK YOU.

Mathematics
1 answer:
Tom [10]4 years ago
4 0

Answer:

The triangles can be congruent but not always.

The triangles do not have to be congruent, but they have to be similar.

Step-by-step explanation:

See the attached diagram with this answer.

For any line (say OP), if you draw two right triangles ( Δ ABC and Δ A'B'C') using the line, OP as the hypotenuse, then the triangles can be congruent. This will be only when AC = A'C'.

That means if we draw two right triangles using the same length of a straight line as hypotenuse, then only the two right triangles will be congruent.

Now, If AC = A'C' then automatically, it becomes AB = A'B' and BC = B'C' and then by SSS criteria, the triangles Δ ABC and Δ A'B'C' will be congruent i.e. Δ ABC ≅ Δ A'B'C'.

But the triangles Δ ABC and Δ A'B'C' do not have to be congruent but they have to be similar.

Because, \frac{A'B'}{AB} = \frac{B'C'}{BC} = \frac{A'C'}{AC}

If this ratio becomes 1 : 1 then only those triangle will be congruent otherwise they will be similar only. (Answer)

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A ball is thrown into the air with an upward velocity of 80ft/s. Its height H in feet after T seconds id given by the function H
pashok25 [27]
1. The function H= -16T^2+80T+5 is a parabola of the form a x^{2} +bx+c, so to find the maximum height of the ball, we are going to find the y-coordinate of the vertex of the parabola. To find the y-coordinate of the vertex we are going to evaluate the function at the point \frac{-b}{2a}.
From our function we can infer that b=80 and a=-16, so the point \frac{-b}{2a} [/tex] will be \frac{-80}{-2(16)} = \frac{5}{2}. Lets evaluate the function at that point:
h=-16t^2+80t+5
h=-16( \frac{5}{2} )^2+80( \frac{5}{2} )+5
h=105

We can conclude that the ball reaches a maximum height of 105 feet.

2. Since we now know that the maximum height the ball reaches is 105 feet, we are going to replace h with 105 in our function, then we are going to solve for t to find how long the ball takes to reach its maximum height:
h=-16t^2+80t+5
105=-16t^{2}+80t+5
-16t^2+80t-100=0
-4(4t^{2}+20t-25)=0
4(2t-5)^2=0
2t-5=0
t= \frac{5}{2}
t=2.5

We can conclude that the ball reaches its maximum height in 2.5 seconds.

3. Just like before, we are going to replace h with 5 in our original function, then we are going to solve for t to find how long will take for the ball to be caught 5 feet off the ground:
h=-16t^2+80t+5
5=-16t^2+80t+5
-16t^{2}+80t=0
-16t(t-5)=0
t-5=0
t=5

We can conclude that it takes 5 seconds for the ball to be caught 5 feet off the ground.
5 0
4 years ago
Can you guys please help me im confused
JulijaS [17]

Answer:

The bullet point between the numbers means times in this case, in some other cases it would mean "and" also known as plus. Therefore, the correct answer is the second one.

Step-by-step explanation:

In each half unit cube there is 6 cubes. ⇒

6 + 6 + 6 = 18 ⇒

But, this is not one of the options.⇒

So, we have to make the equation a bit different to solve it. ⇒

2 x 3 x 2, is the first option. ⇒

This is incorrect, as it equals 12. ⇒

The sum we are looking for is 18. ⇒

The second answer is 2 x 3 x 3. ⇒

This equals 18, we have found the correct answer. ⇒

So, there are a total of 3 half-unit cubes. ⇒

There are a total of 18 cubes. ⇒

I hope this helps!

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3 years ago
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Xelga [282]
.416 is rounded to the nearest thousandth
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3 years ago
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DiKsa [7]

Answer: AB=√17, AD=√98,6

Step-by-step explanation:

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AB=√17

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Vitek1552 [10]

Answer:

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10 x 10 = 100

So 10 is the side length. P= s + s + s +s

10 + 10 + 10 +10 = 40

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