She has 25 nickels in the piggy bank
Answer:
D
Step-by-step explanation:
tan=adjacent side/opposite side
sin=adjacent side/hypotenuse
cos=opposite side/hypotenuse
knowing this:
cos P=8/17, so a is false
tan Q=8/15, so b is false
sin P=15/17, so c is false
cos Q= 15/17, so only d is true
0.000576 is the right awnser
Answer:
-
Step-by-step explanation:
Given:
10 poker chips:
Let the stack has positions (1,2,3,4,5,6,7,8,9,10)
So we can find all possible outcomes of the stack is:
=
and the possibility of a stack to be identical while flipping is:
So the different 10-chip stacks can Dave make if two stacks are not considered distinct:
-
(A)
Vertex:(0,4)
Focus : (0, -7/2)
Axis of symmetry: x = 0
Directrix : y = - 9/2
(B)
Vertex:(-3,-4)
Focus : (-3,-31/8)
Axis of symmetry: x = -3
Directrix: y = - 33/8