2x + 8 = 16
2x = 16 - 8
2x = 8 (divide both sides by 2 to get x)
2x/2 = 8/2
x = 4
3x-26=10
3x=10+26
3x=36
X=12
Answer:
Addition
Step-by-step explanation:
You should add 4 and 5 first because of PEMDAS.
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Since 4+5 is in parentheses it should be done first.
Answer:
The resultant speed is 294.5 mi/h in a direction N79.7°E
Step-by-step explanation:
Let
East and North as the positive x and y-axis, respectively.
West and South as the negative x- and y-axis, respectively.
Answer:
2+32 (Or x)+16 = 50
Step-by-step explanation:
The lame answer is that you put it into a calcuator and see.
The more formal way you know is if, when the fraction is reduced, the denominator's only prime factors are 2s or 5s. If that's the case, the fraction will terminate. If you have any prime factor other than 2 or 5, it will repeat.
But knowing that "2 or 5 prime factor" idea would have to be something specifically taught in your class (or a prerequisite class).