All categories

3 years ago

Find the coordinates of the vertices of a triangle after a 90 degree rotation counterclockwise about the origin.

Mathematics

1 answer:

Oksana_A [137]3 years ago

7 0

Step-by-step explanation:

The rule for a 90 degree counterclockwise is

(x,y) -> (-y,x)

C(-1,2) -> C'(-2,-1)

D(3,5) -> D'(-5,3)

E(1,2) -> E'(-2,1)

You might be interested in

Find the Area of the Shaded Region.

Mrac [35]

9514 1404 393

Answer:

610 m²

Step-by-step explanation:

If we extend the horizontal line across the right-hand portion of the figure, then the figure is divided into two rectangles:

bottom: 5 m × 50 m = 250 m²

top: 18 m × 20 m = 360 m²

The sum of these areas is the shaded area:

shaded area = 250 m² +360 m² = 610 m²

4 0

2 years ago

5(y + 3) = 5y + ____

Sergeeva-Olga [200]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

114% of 145 is what number

Elanso [62]

Answer:

165.3

Step-by-step explanation:

8 0

3 years ago

What X !!!!!!!!!!!!!!!!!! Help me please!!!!

Vaselesa [24]

Answer:

Step-by-step explanation:

According to the problem, 

45° + x = 180° [Linear pair]

=> x = 180° - 45°

=> x = 135° (Ans)

5 0

3 years ago

Read 2 more answers

Find the area of the shape. Either enter an exact answer in terms of π or use 3.14, point, for π and enter your answer as a deci

vredina [299]

Answer:

25π

Step-by-step explanation:

1) for whole circuit: A=π*r², where r - radius of the given circle;

2) for a quater of the circuit: A=πr²/4;

3) finally, A=π*100/4=25π.

7 0

2 years ago