When two triangles are similar, that means that the lengths of their sides are similar, meaning that if you were to multiply each side of one triangle by 'a magic number,' you would get the corresponding lengths of the other triangle. In this problem, the first step is to find the 'magic number.' Two sides that are corresponding are 6 and 8. Dividing them, we get that the magic number is 8/6 which is 4/3. That means to find the answer, we will have to multiply 9 by 4/3.
9 * 4/3 is 12, meaning that x is equal to 12 units.
Answer:
1st one
Step-by-step explanation:
=
−
2
±
1
0
√
3
In this question , we have the formula of acceleration given, which is

And we have to solve for 
First we need to get rid of denominator t from right side and for that, we multiply both sides by t, that is

Now to solve for v1 , we need to get rid of v0, and for that , we add v0 to both sides, that is

And that's the required answer.
Answer:
Angle 3 is 113°
Step-by-step explanation:
Angles 2 & 3 is supplementary, so it equals 180°. Subtract 67 from 180 and you get 113. DUH.
Good Luck!!
For this you would do

Because 60% is the same as 0.60. And solving a problem like this is the opposite of finding a percent of a number. When you solve this you get 80. So there are 80 students in total.