Answer: 0.05
Step-by-step explanation:
Let M = Event of getting an A in Marketing class.
S = Event of getting an A in Spanish class,
i.e. P(M) = 0.80 , P(S) = 0.60 and P(M∩S)=0.45
Required probability = P(neither M nor S)
= P(M'∩S')
= P(M∪S)' [∵P(A'∩B')=P(A∪B)']
=1- P(M∪S) [∵P(A')=1-P(A)]
= 1- (P(M)+P(S)- P(M∩S)) [∵P(A∪B)=P(A)+P(B)-P(A∩B)]
= 1- (0.80+0.60-0.45)
= 1- 0.95
= 0.05
hence, the probability that Helen does not get an A in either class= 0.05
Answer:
A perfect square is an integer that results in another integer when square rooted.
Step-by-step explanation:
For example:
16 is a perfect square because 
= 4.
16 and 4 are both integers
Also, notice that 4 x 4 = 16
The answer should be C because -1 so go down one the it postive 2 so go to the right 2
Answer: 76.56sqcm
Step-by-step explanation:
Area of rectangle= length * width
= 16 * 4 = 64sqcm
Area of semicircle= (1/2)(r^2)π
r= d/2= 4/2= 2
Area of semicircle= (1/2)(2^2)(3.14)
= 6.28sqcm
Area of bookmark= Area of rectangle + 2*Area of semicircle
Area of bookmark= 64 + 2(6.28)
=64 + 12.56 = 76.56sqcm
