Y = 7.75x
when x = 4 we have
y = 7.75 * 4 = 31 dollars answer
Answer:
10 divided by 2 is 5
8 times 3 is 24
54 minus 6 is 48
9 to the third power is 729
Step-by-step explanation:
Answer:
360 polygon
Step-by-step explanation:
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The average score of all the students in both classes is 84.
<h3>How to calculate the average?</h3>
The class with 30 students had an average score of 80 on a test. The total score will be:
= 30 × 80
= 2400
A class with 20 students had an average score of 90 on the same test. The total score will be:
= 20 × 90
= 1800
Total scores = 2400 + 1800 = 4200
Number of students = 20 + 30 = 50
The average score will be:
= Total score / Total students
= 4200 / 50
= 84
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