Answer:
10-x
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Given:
Girls = 25
Boys = ?
Number of students who prefer tap dance = 9
percentage of students who prefer tap dance = 20%
We need to divide 9 by 20% to get the total number of students who filled out a survey.
9 ÷ 20% = 45 total number of students
Girls + Boys = 45
25 + Boys = 45
boys = 45 - 25
boys = 20
The correct equation is: B. 0.2(x + 25) = 9
0.2x + 5 = 9
0.2x = 9 - 5
0.2x = 4
x = 4 / 0.2
x = 20
Answer:
3. 150 units^2
4. 366 cm ^2
Step-by-step explanation:
Answer:
2 runners will be needed
Step-by-step explanation:
1/2 = 2/4
2/4 / 1/4 = 2
2 runners, for 1/2 mile