Q: john has four more nickles than dimes in his pocket, for a total of $1.25 . which equation could be used to determine the number of dimes , x , in his pocket ?
possible answers : a. 0.10(x + 4) + 0.05(x) = $ 1.25 , b. 0.05(x + 4) + 0.10(x) = $1.25
, c. 0.10(4x) + 0.05(x) = $1.25 , d. 0.05(4x) + 0.10(x) = $1.25

Step-by-step explanation:

so he has 4 more nickels then dimesand if dimes represent x, then his nickels wold be x + 4

nickels are worth 0.05 and dimes are worth 0.10and he has a total of 1.25...so ur equation would be : B. 0.05(x + 4) + 0.10(x)

To solve this exercise, you must apply the proccedure below:

 1. First, you must apply the formula for calculate the area of a semicircle, which is:

 A=πr²/2

 A is the area of the semicircle.
 π=3.14
 r is the radius of the semicircle

 2. The radius is:

 r=D/2
 r=30.77 feet/2
 r=15.385 feet

 3. When you substitute the values into the formula, you obtain:

 A=πr²/2
 A=(3.14)(15.385 feet)²/2
 A=371.61 feet²

 The area that will be painted grey is: 371.61 feet²