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yulyashka [42]
3 years ago
10

Please help me with geometry

Mathematics
1 answer:
Vikentia [17]3 years ago
7 0

Answer:

x = 7

Explaination:

ABC = 40°

and BD bisects the angle so ABD = 20°

so 3x-1=20

solving for x gets us

x = 7

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X^2+15x+c is a perfect square trinomial, what is c?
Natalija [7]

Answer:

C equals 56.25

Step-by-step explanation: because all we have to do is 225 divided by 4. Hope this helps and can you make me brainliest. :)

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What happens to the diagonal of a rectangle when the rectangle is reflected across a line of symmetry? What does this suggest ab
SIZIF [17.4K]

When you reflect a diagonal over a line of symmetry, the diagonal will land perfectly on the other diagonal (and vice versa). This suggests that one diagonal is a mirror copy of the other.

Another way to put it: The vertex points of the rectangle will swap when we reflect over a line of symmetry. A diagonal is simply the opposite vertex points joined together. So this is why the diagonals swap places (because the vertices line up perfectly when you apply the reflection).

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g True or False: Regression analysis is used for prediction, while correlation analysis is used to measure the strength of the a
larisa [96]

Answer:

The given statement is true.

Step-by-step explanation:

Regression Analysis:

  • Regression analysis is a technique that help us to find or define a relationship between a dependent and an independent variable.
  • It helps us to predict the dependent variables with the help of independent variables.
  • Various techniques are used for the prediction of independent variable.
  • It is a type of predictive statistical technique and helps us to find whether there is a significant relationship between the dependent and the independent variable.

Correlation analysis:

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Thus, the given statement is true.

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3 years ago
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Gekata [30.6K]

Answer:k=3

Step-by-step explanation:

Parece que faltan datos

para poder hallar el valor de la incognita k. Debe haber una ecuación

Suponiendo que tu expresion estaba igualada a cero

-4k+12=0

Despejando k quedaría -4k=-12

luego k=(-12)/(-4)

obteniendo el valor de k=3 positivo

3 0
3 years ago
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