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3241004551 [841]
2 years ago
10

If you prove that △ABD is congruent to △CDB, which general statement best describes what you have proved?

Mathematics
1 answer:
fredd [130]2 years ago
5 0

Answer:

  A: Opposite sides of a parallelogram are congruent

Step-by-step explanation:

The only diagonal involved is BD, so none of the statements regrading diagonals has been proven. The only thing proven is ...

  AB ≅ CD . . . . opposite sides are congruent

  AD ≅ CB . . . . opposite sides are congruent

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AfilCa [17]

Answer: Red is 0.18 And Blue is 0.68

Step-by-step explanation:

Look at sizes and comparisons between the sizes and all together should add to 1

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3 years ago
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Please Help! <br> Factor the expression:<br> x2 − 28x + 52
Drupady [299]

Answer:

(x-2)(x-26)

Step-by-step explanation:

x^2-2x-26x+52

x(x-2)-26(x-2)

(x-2)(x-26)

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3 years ago
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Y=2x+9 y=4x-9 Solve the system of equations.
Deffense [45]

Answer:

Your solution is (9, 27) or x = 9, y = 27

Step-by-step explanation:

y = 2x + 9

y = 4x - 9

We can see that both of these equations equal y, so we can set them equal to each other.

2x + 9 = 4x - 9

Add 9 to both sides.

2x + 18 = 4x

Subtract 2x from both sides.

18 = 2x

Divide both sides by 2.

9 = x

Now we want to find y. To do this, plug x = 9 back into one of the original equations.

y = 2(9) + 9

Multiply.

y = 18 + 9

Add.

y = 27

Your solution is (9, 27)

Check your answer by plugging x = 9 and y = 27 back into the original equations.

y = 2x + 9

27 = 2(9) + 9

27 = 18 + 9

27 = 27

y = 4x - 9

27 = 4(9) - 9

27 = 36 - 9

27 = 27

Your answer is correct.

Hope this helps!

3 0
3 years ago
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HELP!!!! if you answer you get 20 points.
wolverine [178]

Answer:

Very last choice is the answer.

Step-by-step explanation:

Remark

The thing that is most important is that the horizontal line connect h and the radius is parallel to the cut of the sphere if it was placed right in the middle. That line swings around as though the center was a pivot.

Solution

  • So what you have is a circle when that line goes around that part of the sphere.
  • To find the length of that line, use the Pythagorean Theorem. Call the line r1.
  • r1 ^2 = r^2 - h^2
  • So the area is pi * r1^2
  • Area = pi (r^2 - h^2)
  • The very last one is the answer.
8 0
3 years ago
Given the equation 2X +4/3 Y equals one and Y -9/13 x=9 by what Vector would you multiply the first equation so that combining t
Mila [183]

Answer: Option B

B. \frac{9}{26}

Step-by-step explanation:

We have the following equations:

2x + \frac{4}{3}y = 1       (1)

y -\frac{9}{13}x=9          (2)

Let us call "a" the coefficient of the variable x in the first equation and call "b" the coefficient of the variable x in the second equation.

Then we must multiply the number "a" by a value z such that when adding az + b the result is zero.a = 2

b = -\frac{9}{13}

So

2z-\frac{9}{13} = 0

We solve the equation for z

2z=\frac{9}{13}

z=\frac{9}{26}

The first equation must be multiplied by a value of \frac{9}{26}

4 0
3 years ago
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