3 (46+56) / 7 (68-45+7) =
First perform operations in the parentheses.
3 (102) / 7 (30) =
Multiply top and bottom
306/ 210 =
Reduce
153/105 = 51/35 = 1 and 16/35
To find the mean, add all the values and then divide the sum by how many values you added. In this case, if the teacher drops the lowest score (68) that would leave 5 values. So,
90 + 83 + 88 + 74 + 80 = 415 < this is the total of all (minus the lowest) or Lorenzo's test scores. Now take this number, and divide it by 5 (because we added five tests together):
415 / 5 = 83 < this is the new mean, and also his percentage grade.
Answer: 83
Alternatively, you can list the grades from least to greatest, and cancel one value from each side until you get to the middle.
Answer:
82+41=awnser
Step-by-step explanation:
82+41= smart
Answer:
132 : 89
Step-by-step explanation:
There is no "another form"
