3p-7+p=13 ok so you will want to add 3p to 1p if there's only a variable then there a invisible 1 in front of it so you'll add 3 to 1 wich is 4 so now your problem Is now 4p-7=13 you then make the negative 7 to a positive 7 so now your going to add 13+7 wich equals 20 now you divide 20 by 4 wich gives you 5
Direction: Opens up
Vertex: (0,0)
Focus: (0,2)
Axis of Symmetry: x=0
Directrix: y=-2
Answer:
Step-by-step explanation:
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<span>the correct answer is
D) 1000 kilometers </span>
Answer:
D. The mathematical expectation of Option A is 1. The mathematical expectation of Option B is 1.5. Option B offers a greater likelihood of advancing to the finish line.
Step-by-step explanation:
The result of a product is odd only when the two numbers are odds.
There are 6*6 = 36 possible outcomes when two dice are rolled. Only 9 of them are a combination of two odd numbers: {1, 1} {1, 3} {1, 5} {3, 1} {3, 3} {3, 5} {5, 1} {5, 3} {5, 5}. Then 36 - 9 = 27 outcomes are even.
P(even) = 27/36 = 0.75
Option A) Mathematical expectation: 0.75*4 + 0.25*(-8) = 1
Option B) Mathematical expectation: 0.75*5 + 0.25*(-9) = 1.5
