Emma pay the $11.49 bill for her lunch with 248 coins consisting of pennies nickels and dimes. If the number of Nichols plus the number of dimes was equal to the number of pennies and how many coins of each type did she use?

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1