Perimeter is where you add all the side lengths together.
Area is the amount of space in an object, so you could do lxw or maybe sometimes bh/2 Or
Consider the angles are = 60,2x,3x
As we know the sum of the interior angle of a triangle is 180
60+2x+3x= 180
5x= 120
x= 24°
Angles are 2x= 2(24)= 48°
and 3x= 72°
<em>The measure of smaller angle is 48°</em>
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.
Would that look like ? If so, you can multiply both sides by (4x-9) to cancel the 4x-9 on the bottom and get it onto the other side. It would look like this: .
Distribute the 27 to the 4x and -9, which will get you this:.
Then you want to add the 243 on both sides to isolate the x which should get you this: .
Your next to final step is to divide both sides by 108 to leave the x alone. This will appear like this: .
Your last step is to simplify the fraction or convert it into a decimal depending on which you prefer. If simplified, you should get and for a decimal you will get
The answer shows in the picture