Get the variable on one side and the numbers on the opposite side.
5x + 12 = x - 8
Let's get rid of that x on the right-hand side of the equation.
We can do this subtracting x from each side of the equation.
(5x - x) + 12 = (x - x) - 8 =
4x + 12 = -8
Let's take out the 12 so that the 4x can be alone.
We can do that by subtracting 12 from each side
4x + (12 - 12) = -8 - 12 =
4x = -20
And finally, divide the both sides by the coefficient of the 4x term. Which is 4.
4x / 4 = -20 / 4 =
x = -5
So, x is equal to -5.
Answer:
C = 2πr.
Step-by-step explanation:
To calculate the circumference of a circle, use the formula C = πd, where "C" is the circumference, "d" is the diameter, and π is 3.14. If you have the radius instead of the diameter, multiply it by 2 to get the diameter. You can also use the formula for circumference of a circle using radius, which is C = 2πr.
Answer: b / 3 = d / 2
Step-by-step explanation:
(b + 6)/3 = (d + 4)/2
(b / 3) + (6 / 3) = (d + 4)/2
(b / 3) + 2 = (d + 4)/2
Subtracting 2 from both sides,
(b / 3) + 2 - 2 = ((d + 4)/2) - 2
or, b / 3 = ((d + 4)/2) - 2
or, b / 3 = (d / 2) + ( 4 / 2 ) - 2
or, b / 3 = (d / 2) + 2 - 2
or, b / 3 = d / 2
So,
b/3 is equal to d/2.
Answer is numbers 10, 30, 70, 90
The 4 numbers must be different and added up and divided by 4 must equal 50.
Four such numbers are 10, 30, 70, 90
We all know that Average = Sum / total of numbers in sum
Addition of these different 4 numbers = 200.
Average = 200 / 4 = 50, the required average.
Problem solved!
7/10 divided by 4/5 is the equivalent to 7/10 multiplied by 5/4....as in if you want to divide a fraction by a fraction you multiply by the reciprocal.therefore the answer is 7/8. if you wanted to use decimals like emily, you would divide .7 by .8... and get .875 or 7/8.
