Answer:
student 4-35
Step-by-step explanation:
The answer is 2.57. I hope this helps
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.
Answer: -5.6
Step-by-step explanation:
-(3.1+2.5)= -5.6
3^2/3^4
To find the answer, we can use this equation:
a^m / a^n = a^m - n
We can now just use 2 - 4, which equals -2.
Now we have 3^-2
3^-2 in decimal form is 0.11111, which equal to 1/9
