Please help me with this

Mathematics

1 answer:

wolverine [178]3 years ago

6 0

Answer:

a 90 degree clockwise rotation followed by a reflection across the x axis

Step-by-step explanation:

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Which statement is the clearest translation of 4 j - 9 = 1?

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Answer:

i think:

A number times four minus nine is one

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Answer:

-7

Step-by-step explanation:

-7 + 5 = -2

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What is the area of the composite figure

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Answer:

Step-by-step explanation:

To find the area of a composite figure, separate it into the regular parts which make the irregular shape. This shape is composed of a semi-circle and a rectangle. Find the area by finding the area of each shape.

Semi-circle:

The semi-circle has a diameter of 2 + 4 + 2 = 8. The area this figure uses the radius which is half the diameter. The radius is 4. To find the area substitute r = 4 into $\pi r^2 = \pi 4^2 = 16\pi$ . However the semi-circle has a smaller circle cut out of it with radius 2. The area of the smaller circle is $\pir^2 = \pi 2^2=4\pi$ . The semi circle in the shape is the areas subtracted which equals 12π.