Answer:
Step-by-step explanation:
C = 2 r
C = 16
= 2 ÷ =
Let x = the number of total students in the class
Convert the percent into a decimal by moving the percent sign two places to the left and change the percent sign into a decimal point.
60% = 0.6
Then 0.6x = the number of girls in the class
Then 0.6x + 30 = the total number of students in the class
0.6x + 30 = x
Solve for x.
0.6x + 30 = x
0.6x = x - 30 <-- Subtract both sides by 30
-0.4x = -30 <-- Subtract both sides by x
x = 75
Now we have the total number of students in the class.
60 percent of the students are female.
0.6 * 75 = 45
So, C 45 is the answer.
Answer: ok what do you need help with
Step-by-step explanation:
Answer:
The answer is 3.
Step-by-step explanation:
1. You need to substitute the values into the equation
2. You would then have 1/2(4-3(-2))-2
3. Now you have to multiply 3×-2 and you will now have 1/2(4+6)-2
4. Then you have to add what's in the parenthesis and you will have 1/2(10)-2
5. Now multiply 1/2(10) and uou will have 5-2
6. Now subtract 5-2 and that will = 3
(There is also a picture of how I worked it out)