Heather has a combination of dimes and quarters in her piggy bank. If heather has a total of 43 coins and the value the piggy bank is $7.60,how many of each coin does she have?

c.)

step-by-step explanation:

1. supplementary angles

2. acd and bcd

step-by-step explanation:

answer: 75°

step-by-step explanation:

∠esk is the supplement of ∠edk, so is 100°. ∠esd = 1/2·arc ed, so is 25°.

since ∠esk = ∠esd + ∠dsk

you have 100° = 25° + ∠dsk . .

fill in known values 75° = ∠dsk . . . . .

subtract 25°

step-by-step explanation:

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64