x^2-4x=60
<h2>In a meeting room for a business event, there are 4 fewer chairs laid out in each row than the number of rows. The total number of chairs in the room is 60.</h2><h2 />
If each row has the same number of chairs as rows, then there is x^2 chairs.
Because there is 4 fewer chairs in every row, for every row you minus 4 - 4x
There a 60 chairs in total.
x^2 - 4x = 60
Substitute a number into the formula to check:
If there are 10 rows:
x = 10
10^2 - 4(10) = 60
100 - 40 = 60.
Answer:
here is the answer :)
Step-by-step explanation:
Comment
The way to handle this is to realize that the 180 degree angle (the two supplementary angles added together to make 180o by definition) is actually divided into 6 parts. There are 2 parts for the smaller angle and 4 for the larger.
Added together the 2 angles = 180
Equation
Let one of the 6 parts = x
2x + 4 x = 180
Solve
2x + 4x = 180 Add the like terms on the left together.
6x = 180 Divide by 6
x = 180/6
x = 30
Answer
Since one angle is 2 parts (the smaller angle)
2 * 30 = 60
And the larger angle is
4 * 30 = 120
The two angles are
60,120 <<<< answer.
Further comment.
The two angles are supplementary 60 + 120 = 180
One angle is twice as big as the other. 2*60 = 120
The answer is false, any number multiplied by a number lower than 1 will always decrease the original number
Answer:
17.39%
Step-by-step explanation:
We can summary the question:
- Probability of students using Google chrome= 0.49
- Probability of students using other browsers = 0.51
So the probability that you need to pick 7 students to find 2 students using Google Chrome is:
P(G) = * ()() = 21*0.2401*0.03 = 0.1739 = 17.39%