I can only give possible combinations of the ages. This is because only the product is given. Had the sum of all ages been given, possible combinations would boil down into 1 combination.
3 kids with a youngest. This means that the ages are not the same.
We do prime factorization to get the age combination.
72 ÷ 2 = 36
36 ÷ 2 = 18
18 ÷ 2 =   9
  9 ÷ 3 =   3
  3 ÷ 3 =   1
1 x 2 x 2 x 2 x 3 x 3 = 72
Possible combination with no repeating number.
1 x 8 x 9 = 72
2 x 4 x 9 = 72
4 x 6 x 3 = 72
1 x 6 x 12 = 72
        
             
        
        
        
Answer:
x=122°
Step-by-step explanation:
sum of all interior angles in a quadrilateral = 360° 
then , 
119+105+78+m = 360 
 m = 58 
....
m+ x = 180 ( linear pair)
58+x = 180
 x = 122 
 
        
             
        
        
        
9514 1404 393
Answer:
   (a)  2/100
Step-by-step explanation:
To determine the value of a digit, set all other digits to zero. Your digit has a value of ...
   0.020  . . .  two hundredths = 2/100
 
        
                    
             
        
        
        
Answer:
a) 29
b) 0
c) 7
d) 3/8 
Step-by-step explanation:
Whenever you're facing a clock maths problem, the solution always have to be < to the number of hours in the given clock.  If it's > the number of hours of the given clock, you subtract the number of hours until you get a result <= the number of clock hours.
If the result is negative, you add the clock hours.
a) 21 - 33 = -12  , so -12 + 41 = 29
b) 13 * 4 = 52,  then do 52 - 52 = 0, since answer has to be < 52.
c) 11+19 = 30, 30 - 23 = 7
d) 3/8 = 3/8, since 3/8 <= 15, you're also fine.
 
        
             
        
        
        
The answer to this question is D) 13.9 in.
Try using the Pythagorean theorem when solving to get the hypotenuse or other angles for a right triangle.