I’ll mark brainliest

Step-by-step explanation:

The two ringtones will cost her a total of and is a fixed amount. The relationship between the cost and number of songs only is and therefore the answer is . You can also directly find the answer by finding the y-intercept (in this case ), as no other answer choices include the term , so A must be the correct answer.

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4