First we need to write the equations for the given scenario. Using the equations, we can form a system of matrix for the situation.
Let the customer buys, x pounds of almonds, y pounds of cashews and z pounds of walnuts. Since he buys 12 pounds of mixed nuts, we can write:
Total cost of these mixed nuts was $118. So we can write:

Customer buys 2 more pounds of walnut than cashews. So, we can write:

Using these equations, we can set up the system of matrix as shown below in the image.
Answer:
30
Step-by-step explanation:
36 x 8 = ( ___ + 6) x 8
36 - 6 = 30
36 x 8 = ( 30 + 6) x 8
36 x 8 = 36 x 8
288 = 36 x 8
288 = 288
Answer:
-0.25 or -¼
Step-by-step explanation:
-20c = 180
-20c/-20 = 180/-20
c = -0.25 or -¼
Answer:
.
c)"At least 1 O+" is equivalent to "not none O+" (forgive the incorrect English).
P(not none O+)+P(none O+)=1
P(not none O+)=1-P(none O+)
P(not none O+)=1-0.00491
P(at least 1 O+)=0.995
Step-by-step explanation:
It's a proportion.
2 is to x as 15 is to 9, or 2/x = 15/9.
Multiply the means and extremes
15x = 18
divide both sides by 15 to get x by itself.
x = 1.2