B) Dalam Rajah 2.1, PQRS dan STUV ialah segi empat tepat. In Diagram 2.1, PQRS and STUV are rectangles.
Р
T
S
h cm
9
(2h + 1) cm
U
k cm
V
Q
(3k- 1)cm
R
x
Rajah 2.1
Diagram 2.1
Ungkapkan luas, dalam cm2, kawasan yang berlorek dalam sebutan x dan y.
Express the area, in cm², of the shaded region in terms of x and y.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

the number 100 represents the number of trials in the experiment.

49/100 represents the experimental probability of the coin landing heads up.

step-by-step explanation: