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yaroslaw [1]
3 years ago
6

The Hypotenuse Angle Theorem, similar to the HL Theorem, states that if the hypotenuse and one angle of a right triangle are con

gruent to the hypotenuse and corresponding angle of another right triangle then the triangles are congruent. Prove the HA theorem
Mathematics
1 answer:
Maru [420]3 years ago
8 0

Step-by-step explanation:

In order to proof the HA theorem, we consider two triangles  and   which are right angle triangles. The right angle lies at points  and   respectively.

We also consider that the hypotenuse are congruent meaning  and  .

Now we have taken that angle  and  .

Since  and  are 90 degrees, so angle B would be congruent to angle E i.e  

Hence by Angle, side and angle congruence in both triangles we can write as,  .

And this is what the HA thoerem states also

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The area of a rectangular piece of cardboard is represented by
Liula [17]

This question is solved applying the formula of the area of the rectangle, and finding it's width. To do this, we solve a quadratic equation, and we get that the cardboard has a width of 1.5 feet.

Area of a rectangle:

The area of rectangle of length l and width w is given by:

A = wl

w(2w + 3) = 9

From this, we get that:

l = 2w + 3, A = 9

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}

x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}

\Delta = b^{2} - 4ac

In this question:

w(2w+3) = 9

2w^2 + 3w - 9 = 0

Thus a quadratic equation with a = 2, b = 3, c = -9

Then

\Delta = 3^2 - 4(2)(-9) = 81

w_{1} = \frac{-3 + \sqrt{81}}{2*2} = 1.5

w_{2} = \frac{-3 - \sqrt{81}}{2*2} = -3

Width is a positive measure, thus, the width of the cardboard is of 1.5 feet.

Another similar problem can be found at brainly.com/question/16995958

5 0
2 years ago
If f(x) = x, then f(64) is equal to<br><br> a. 1/4<br> b. -8<br> c. -4<br> d. 4
blsea [12.9K]
B hope it helps have a good day
6 0
3 years ago
Given: AB tangent to circle O at B, and secant through point A intersect the circle at points C and D. Find CD, if
azamat

Answer:

6 cm

Step-by-step explanation:

If you use Tangent-secant product (chapter reference), AB/AC = AD/AB so 4/2 = AD/4. AD = 8, CD = AD - AC = 8 - 2 = 6 cm.

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2 years ago
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12 * 4 = 48
25 * 4 = 100

48/100 = 0.48, or 48%

12 is 48% of 25
I hope this helps you

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3 years ago
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If you invest $8,600 at a 3.95% simple annual interest rate, approximately how long will it take for you to have a total of $21,
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Well, Doing 8,600 x .0395, you get 339.7, then if you do that x 25, that's too low if you add 8600 to it, 36 years if you do 339.7 x 25, then add 8600 its extremely close to 21000. And since you put approximately, since this will round up, the best answer choice is definitely B

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