A is a function because the x does not repeat
Y = 2x-3
x + y = 18
Since you already know what y is equal to, we can plug that in into the second equation.
x + (2x-3) = 18
x + 2x -3 = 18
3x -3 = 18
Add 3 to both sides of the equation. (By doing this, we can isolate the 3x on the left side by getting rid of the -3)
3x = 21
Divide 3 on both sides
x = 7
Answer:
Step-by-step explanation:
Plug the given value of the diameter into the formula and solve.[2]
Example problem: You have a circle tub with a diameter of 8 feet, and you want to build a white fence that creates a 6-foot wide space around the tub. To find the circumference of the fence that has to be created, you should first find the diameter of the tub and the fence which will be 8 feet + 6 feet + 6 feet, which will account for the entire diameter of the tub and fence. The diameter is 8 + 6 + 6, or 20 feet. Now plug it into the formula, plug π into your calculator for its numerical value, and solve for the circumference:
C = πd
C = π x 20
C = 62.8 feet
Answer:
Step-by-step explanation:
Answer:
660.4
Step-by-step explanation:
If the bike wheel is 26 inches in diameter, and 1 inch = 25.4 millimeters then we simply need to convert inches to millimeters, which can be done by multiplying the number of inches by 25.4. The reason we chose 25.4 is that 1 inch = 25.4 millimeters.
26 x 25.4 = 660.4
