Answer:
45 girls
Step-by-step explanation:
- Remark
- There are only 2 choices for gender. So if the class is 60% girls, the there must be 100 - 60 = 40% for the boys.
- But we are told that the boys are 30 in number.
- Let x = the total number of students.
Solution
- 40/100 * x = 30 Change the % to a decimal
- 0.4 x = 30 Divide both sides by 0.4
- 0.4 x / 0.4 = 30 / 0.4 Do the division
- x = 30/0.4
- x = 75 students in total
Formula
Total of Boys and Girls = Number of boys + number of girls.
Givens
- Total = 75
- Number of boys = 30
Solution II
- 75 = x + 30 Subtract 30 from each side
- 75 - 30 = x +30 - 30
- 45 = x
- There are 45 girls in the class.
You are a kite sailing across the ocean. The table gives your height at different times.
A. How many feet do you move each second?
Answer: From the given table information, we clearly see that after every second the kite moves 2 feet
B. What is your speed? Give the units.
Answer: We know that :


Therefore, the speed of the kite is 2 feet per second
C. Is your velocity positive or negative?
Answer: The velocity is positive, because the height of the kite goes on increasing direction
D. What is your velocity? Give the units.
Answer: Here the velocity of kite is:
feet per second
Answer:
x = 3
Step-by-step explanation:
If the triangles are congruent then
4x + 1 = 13
4x = 12
x = 3
4,3 hope it help the top is 4 and the bottom is 3