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3 years ago

PLEASE HELP!!!! will give brainliest points to whoever answers first!!!! only going on for 30 minutes.

Mathematics

2 answers:

exis [7]3 years ago

7 0

Answer:

Is to place a ' or a prime

ΔA'B'C'

pogonyaev3 years ago

3 0

Answer:

One way to name a transformed figure is to place a apostrophe after each letter in the

name of the original figure. For example, a reflection of ΔABC is named ΔA'B'C' (pronounced A prime B prime C prime).

Step-by-step explanation:

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The answer:

8 times

Explanation:

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What is the area of a triangle with vertices (3,0) (9,0) (7,6)

Nezavi [6.7K]

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

The area of a triangle with three vertices $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ is given by the determinant of the following matrix:

$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (3,0) (9,0) (7,6). So

$A = \pm 0.5 \left|\begin{array}{ccc}3&0&1\\9&0&1\\7&7&1\end{array}\right|$

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$A = \pm 0.5*(63-21)$

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The area of the triangle is of 21 units of area.

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Marianna [84]

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Step-by-step explanation:

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