It's a simple linear equation in the variable 'x'.
There's only one number that 'x' can be. If it's
any other number, then the equation is not true.
Here's how to find out what number 'x' must be:
The equation is ==> 2x + 5 = 4x
Subtract 2x from each side: 5 = 2x
Divide each side by 2 : 2.5 = x
Step-by-step explanation:
5% of $19 = 19*5/100 = 19/20 = 0.95
5% increase in cost will make the total cost as,
$19 + $0.95 = $19.95
Answer:
The greatest common divisor of two integers a and b (not both 0) is the largest integer that divides both a and b.
Step-by-step explanation:
Think for example of the numbers a=5, and b= -10. The greatest common divisor of 5 and -10, is the largest integer that divides both 5 and -10. We can find it by inspection (although there are more advanced methods to find it). We can list all integers that divide both 5 and -10.
-5 divides 5, and it also divides -10
-1 divides 5, and it also divides -10
1 divides 5, and it also divides -10
5 divides 5, and it also dividies -10
The LARGEST of them all is then 5, so 5 is the greatest common divisor of 5 and -10. The usual way to write it is
A = 81 square in.
s = sqrt(A)
s = sqrt(81)
s = 9 in.