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vfiekz [6]
3 years ago
7

Determine if the set is empty {x|x is a planet in our solar system whose name begins with F}

Mathematics
1 answer:
Levart [38]3 years ago
6 0
The set is empty............
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Guys hi am i correct ??
Sloan [31]
Yes, you are correct.

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2 years ago
Question 1 GIVING BRAINLIESTT!!!!!!!!
Rama09 [41]
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3 years ago
Assume that advanced students average 93% on an achievement test and regular students averaged 75%. If 100 advanced students and
Lemur [1.5K]
Average (mean) = (sum of all the data) / (# of data)

sum of all the data = (average)(# of data)

Thus for 100 students with an average of 93,
sum of all data = (93)(100) = 9300

and for 300 students with an average of 75,
sum of all data = (75)(300) = 22500

Therefore you would expect the overall average to be
(9300 + 22500) / (100 + 300) = 79.5 %

Now if there are x # of advanced students and y # of regular students, then

x + y = 90 (total # of students) and 93x + 75y = 87(x + y) (overall average)

The second equation can be simplified to x - 2y = 0

Subtracting the two equations yields

x = 60 and y = 90

Therefore you would need 60 advanced and 30 regular students.
7 0
3 years ago
What do calculators use to show scientific notation
max2010maxim [7]

Answer:

Basically, when a scientific calculator displays a number as aEb, it means to move the decimal point in a as follows:

If b is positive, move the decimal point b units to the right.

If b is negative, move the decimal point b units to the left.

Step-by-step explanation:

7 0
3 years ago
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