Dora buys a new backpack for $18.45. She gives the cashier one $10 bill, one $5 bill, and four $1 bills. Dora counts her change and realizes the cashier has made a mistake. Which coins has Dora received?
A)
1 quarter, 2 nickels, 4 pennies
B)
1 quarter, 3 dimes
0
1 quarter, 1 dime, 4 nickels
D)
1 quarter, 2 dimes, 2 nickels
E)
1 quarter, 6 nickels

show us the graphs dude

step-by-step explanation:

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus