Answer:

Step-by-step explanation:

The circumference of a circle=2

r
We know that diameter is double the radius, and therefore can be written as d=2r
Circumference of a circle in terms of diameter is C=

d
The 2r cancels out
Answer:
You leave $2.22
Step-by-step explanation:
convert 15% to 0.15
multiply $14.80*0.15
14.80*0.15=2.22
tip:$2.22
since x equals 22.5, you solve 2(22.5) which gives you 45 :)
Answer:
x=5/2
Step-by-step explanation:
4x-2=2x+3
1) Add 2 to both sides:
4x=2x+5
2) Subtract 2x from both sides:
2x=5
3) Divide both sides by 2:
x=5/2