Answer:
(-2,9)
(2,-9)
Step-by-step explanation:
The point Q of quadrilateral QRST has coordinate (-9,2).
When this point is reflected across the y-axis , we negate the x-coordinate to obtain .
This point is again rotated through an angle of 90 degrees(counterclockwise) about the origin.
The rule for 90 degrees counterclockwise rotation is .
Therefore the image of Q(-9,2) after a reflection across the y-axis followed by a 90 degrees counterclockwise rotation about the origin is is Q'(-2,9).
However, the rotation could also be clockwise.
The rule for 90 degrees clockwise rotation is .
The image of Q(-9,2) after a reflection across the y-axis followed by a 90 degrees clockwise rotation about the origin is is Q'(2,-9).
Both answers are there, so you can check them since the question did not specify the direction.
Answer:
x=1
Step-by-step explanation:
28% decrease
Solution:
Calculate percentage change
from V1 = 25 to V2 = 18
(V2−V1)|V1|×100
=(18−25)|25|×100
=−725×100
=−0.28×100
=−28%change
=28%decrease
Answer:
90 square meters
Step-by-step explanation:
To find area, first we multiply length times width, so 5x18. The answer and area of the rectangle is 90 square meters. Don't forget to label it too!
S + a = 722
s = 72 + a
(72 + a) + a = 722
2a + 72 = 722
2a = 722 - 72
2a = 650
a = 650/2
a = 325 <== adults
s = 72 + a
s = 72 + 325
s = 397 <== students