Answer:
Hey there!
You can make a right triangle by the sides 6, 8, and 10. The most famous pythagorean triplet is the 3, 4, 5 triangle. Increasing the size of this triangle by a scale factor of 2 makes the sides 6, 8, and 10.
Hope this helps :)
 
        
             
        
        
        
Answer:
-22
Step-by-step explanation:
Each line is worth 3 units
-10 - (-16) = 6 units between and there are 2 spaces
6/2 = 3
We are going down so it is negative
-16 -3 =-19
then the dot is on the next line
-19 -3 = -22
 
        
             
        
        
        
The answer is going to be 14.125 in decimal form
        
             
        
        
        
If we assume that 
x isthe number of multiple choice questions, and y is the number of word problems, we can write a system of equations like:
{ x + y = 38
{ 2x + 5y = 100
If we multiply the first equation by -2 we get:
{ -2x-2y = -76
{ 2x + 5y = 100
Now if we add both equations we get only equation with 1 unknown (y) :
3y = 24 ⇒ y = 8
Substituting the calculated value to the first equation we get:
x + 8 = 38 ⇒ x = 30
The solution:
{ x = 30
{ y = 8
means that:
The test had 30 multiple choice questions, and 8 word problems.