Sally has 18 coins in her purse. There are 6 pennies, 9 nickels, and 3 dimes. Without looking, she grabs one coin, puts in back, and then grabs another. What is the probability that Sally will select a nickel first and then a dime? Your answer should be simplified.

it is x equals 3   plese mark me really need it

step-by-step explanation:

we know that

1) the inscribed angle measures half of the arc it comprises.

so

m∠dgf= > expression

2) the opposite angles in an inscribed quadrilateral are supplementary angles

so

m∠dgf=

m∠dgf=°

substitute in the expression to find the value of arc ef

therefore

the answer is

the measure of the arc ef is