We have,

Introduce variable
such that 
The sum
is therefore 
So,
(sadia's age)
(father's age)
Hope this helps :)
Answer:
2100
Step-by-step explanation:
30%×3000=900.
3000-900=2100
50k is the same as 50,000
73% = 73/100 = 0.73
Multiply 50,000 with 0.73
50,000 x 0.73 = 36500
You spend $36500.
Subtract 36500 from the total
50,000 - 36,500 = $13,500
$13,500 is the amount of money you have left.
hope this helps
Answer:
Step-by-step explanation:
4/6=2/3
2/3=2/3
scale factor=2/3
Answer:
sin(30°)=cos(60°)=½
Step-by-step explanation:
Sin(30°) and cos(60°) have the same value of √1/2 which gives ½