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OLga [1]
3 years ago
15

To pass a course with aa upper cc ​grade, a student must have an average of 7070 or greater. a​ student's grades on three tests

are 7070​, 7373​, and 6565. find what score the student must get on the next test to get aa upper cc averagenbsp or better. or better.
Mathematics
1 answer:
forsale [732]3 years ago
8 0
The sum of 70, 73, and 65 is 208. Adding a 72 to that equation makes the sum 280. The mean then becomes 70. The answer is 72.
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PSYCHO15rus [73]
Just try to follow my description. When two persons are in the cabin, there is only 1 handshake. When a third person comes, he will have to handshake the two people who came before him. So, there will be 2 handshakes. When a fourth person comes, he would make 3 handshakes with the 3 people who came before him. When the fifth person comes, he would make 4 handshakes with the 4 people who came before him. So, you see there is a pattern. The number of handshakes is 1 less than the total number of people inside the cabin. So, if there are 14 people in the cabin, the last person to come in would have to make 13 handshakes with the 13 people who came in first. Obtaining the sum of all the handshakes starting from the 2 handshakes initially to the 13 handshakes, the sum would be

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8 0
3 years ago
1. Consider a lottery with three possible outcomes:-$125 will be received with probability 0.2-$100 will be received with probab
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Answer:

The expected value of the lottery is $80

Step-by-step explanation:

To get the expected value, we have to multiply each outcome by its probability

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we have this as ;;

125(0.2) + 100(0.3) + 50(0.5)

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