A) 25x+15y=650
25x+15(40)=650
Or it could be 25x=650 and 15y=650
B) No because she makes $15 for every necklace which she only has 40 necklaces 15x40=600
Answer:
Option C: E(X) = 1.65
Step-by-step explanation:
Expected value of X, E(X) = ∑XP(X)
∑ = Summation
X = number of hours
P(X) = probability of a certain number of hours
E(X) = (0*P(X=0)) + (1*P(X=1)) + (2*P(X=2)) + (3*P(X=3)) + (4*P(X=4))
E(X) = (0*0.2) + (1*0.2) + (2*0.4) + (3*0.15) + (4*0.05)
E(X) = 0 + 0.2 + 0.8 + 0.45 + 0.20 = 1.65
E(X) = 1.65 - Option C
Answer:
The vertex is ( -5,0)
Step-by-step explanation:
The vertex form of a parabola is
y = a( x-h) ^2 +k
where ( h,k) is the vertex
y=2(x+5)^2
y=2(x - -5)^2 +0
The vertex is ( -5,0)
Answer:
224in³
Step-by-step explanation:
Find the volume of the rectangular prism, then subtract the volume of the pyramid from it.
Volume of rectangular prism= (length)(width)height)
=(14)(4)(10)=560in³
Volume of pyramid=((length)(width)height))/3
=((14)(4)(6))=336in³
560in³-336in³=224in³
