The sum of x and 9 divided by 2 is equal to 3x
(x + 9)/2 = 3x
Note the equal sign, what you do to one side, you do to the other. First, multiply 2 to both sides
(x + 9)/2(2) = 3x(2)
x + 9 = 6x
Subtract x from both sides
x (-x) + 9 = 6x(-x)
9 = 5x
Isolate the x. Divide 5 from both sides
9/5 = 5x/5
x = 9/5
9/5 is your answer for x
hope this helps
Not sure about this one, please show a picture of your problem!
take 558.25 and 38.5 and multiply them together. I had this same question in my class today.
Answer:
The area of the rectangle is 180 units
Step-by-step explanation:
6 + 2 + 2 = 10
But the areas of each sectioned off shape are
Big rectangle = 180
Small rectangle = 48
2 by 8 triangles = each 8
3 by 8 triangles = each 12
Altogether, it's 268
It will take him 18 minutes b/c it takes him about 1.5 minutes to run 1 mile, therefore 1.5 times 12 is 18 minutes.