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Setler [38]
2 years ago
6

the vertex of a triangle is located at (-2,3). it is rotated 90 degrees clockwise about the origin. what is the new y- coordinat

e of the vertex?
Mathematics
1 answer:
irina1246 [14]2 years ago
5 0

Answer:

90° clockwise rotation rule (about the origin)  for a point

Step-by-step explanation:

(x , y)  →   (y, -x)

Swap x and y......change the  sign on x

Can you take it  from here   ???

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Marked down 15% means the new price would be 85% of the original price ( 100%-15% - 85%)

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What is the area of the composite figure
lara [203]

Answer:

Area of composite figure = 216 cm²

Hence, option A is correct.

Step-by-step explanation:

The composite figure consists of two figures.

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2) Right-angled Triangle

We need to determine the area of the composite figure, so we need to find the area of an individual figure.

Determining the area of the rectangle:

Given

Length l = 14 cm

Width w = 12 cm

Using the formula to determine the area of the rectangle:

A = wl

substituting  l = 14 and w = 12

A = (12)(14)

A = 168 cm²

Determining the area of the right-triangle:

Given

Base b = 8 cm

Height h = 12 cm

Using the formula to determine the area of the right-triangle:

A = 1/2 × b × h

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A = 4 × 12

A = 48 cm²

Thus, the area of the figure is:

Area of composite figure = Rectangle Area +  Right-triangle Area

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Therefore,

Area of composite figure = 216 cm²

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