Answer:
20 students
Step-by-step explanation:
If the class decreased by 15%, the students that she has now (17) represents a percentaje of:
100% - 15% = 85%
so<u> the 17 students are 85% of what she had</u>:
Students Percentage
17 ⇒ 85%
and we are looking for how many students she had 2 years ago, thus we are looking for the <u>100%</u> of students (the original number of studens). If we represent this number by x:
Students Percentage
17 ⇒ 85%
x ⇒ 100%
and we solve this problem using the <u>rule of three</u>: multiply the cross quantities on the table( 17 and 100) and then divide by the remaining amount (85):
x = 17*100/85
x = 1700/85
x=20
2 years ago she had 20 students
Answer:
- f(2) = 0.5(2) +3.4
- f(3.5) = 0.5(3.5) +3.4
- f(15) = 0.5(15) +3.4
- f(21.3) = 0.5(21.3) +3.4
Step-by-step explanation:
Put the given weight where x is in the function definition. You're only asked for the expression, not its value.
- f(2) = 0.5(2) +3.4
- f(3.5) = 0.5(3.5) +3.4
- f(15) = 0.5(15) +3.4
- f(21.3) = 0.5(21.3) +3.4
Answer:
The first box is 35-16=19 The second box is 19.
Step-by-step explanation:
Sorry if it's wrong.
Answer:
The answer is B
Step-by-step explanation:
hope that helps
