For this question, I would first see what one child is equal toby divide the children by the percentage.
15÷3= 5
Each child is worth 5%. If you know each child is worth 5%, and the total number of students are 100%, then you can divide.
100÷5= 20
There are 20 students in the class. To make sure our answer is right, we can check to see if 3 students are 15 percent.
3÷20= .15×100= 15
So yes, there are 20 students in the class.
The answer for question 4 is C and the answer for question 5 is D.
Answer:It is given that principal , P = 1000 Rs. = 210 Rs. hence, compound interest = 210 Rs.
Step-by-step explanation:
Answer: x = 109/48
Step-by-step explanation:
1. Simplify 4 x x/5 to 4x/5
1/4 + 4x/5 = 31 15
2. Subtract 1/4 from both sides
4x/5 = 31/15 - 1/4
3. Simplify 31/15 - 1/4 to 109/60
4x/5 = 109/60
4. Multiply 1both sides by 5
4x = 109/60 x 5
5. Simplify 109/60 x 5 to 545/60
4x = 545/60
6. Simplify 545/60 to 109/12
4x = 109/12
7. Divide both sides by 4
x = 109/12/4
8. Simplify 109/12/4 to 109/12 x 4
9. Simplify 12 x 4 to 48
x = 109/48
Hope this helps & happy halloween! :)
3x - 3y + 9 = 0
The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates of (0, b). It is also the value of y when x = 0.
To solve for the y-intercept, set x = 0:
3(0) - 3y + 9 = 0
3(0) - 3y + 9 = 0
Subtract 9 from both sides:
- 3y + 9 - 9 = 0 - 9
- 3y = -9
Divide both sides by -3 to solve for y:
-3y/-3 = -9/-3
y = 3
Therefore, the y-intercept is (0, 3).
The x-intercept is the point on the graph where it crosses the x-axis, and has coordinates of (a, 0). It is also the value of x when y = 0.
To solve for the x-intercept, set y = 0:
3x - 3(0)+ 9 = 0
3x -0 + 9 = 0
Subtract 9 from both sides:
3x + 9 - 9 = 0 - 9
3x = -9
Divide both sides by 3 to solve for x:
3x/3 = -9/3
x = -3
Therefore, the x-intercept is (-3,0).
The correct answers are:
Y-intercept = (0, 3)
X-intercept = (-3, 0)
