Milo has 15 Dimes, 20 Nickels, 19 Pennies, 8 Quarters, and 1 Half Dollar. Which expression shows one way Milo can use some or all of these coins to get $5.00? A) 2(0.50) + 20(0.50) + 15(0.10) + 6(0.25) B) 3(0.50) + 20(0.05) + 15(0.10) + 6(0.25) C) 3(0.25) + 20(0.10) + 15(0.50) + 6(0.05) D) 6(0.25) + 20(0.05) + 15(0.01) + 1(0.50) E) 8(0.25) + 15(0.10) + 20(0.05)+ 1(0.50)

E)

Step-by-step explanation:

in total milo has $5.19

A does not work because he does not have 22 half dollars, b does not work because he does not have 3 half dollars, c does not work because he does not have 20 dimes, D  does not work work because it only adds up to $3.15.

E works

Whisper-20dB
Quiet Residence-30dB
Soft stereo in Residence-40dB
Average Speech-60dB
Cafeteria-80dB
Pneumatic Jackhammer-90dB
Loud crowd noise-100dB
Accelerating Bike-100dB
Rock concert-120dB
Jet Engine (75 ft away)-140dB

(1)Mode=100dB (since 100 is occurring the maximum no. of times, i.e. it has the highest frequency of 2)
(2)Mean=sum of observations/Total number of observations
=(20+30+40+60+80+90+100+100+120+140)/10
=770/10=10dB
(3)Median= 1/2[{n/2}th observation + {(n/2)+1}th observation], where, n=total no. of observations
So, 1/2[{10/2}th observation + {(10/2)+1}th observation]
=1/2[5th observation+6th observation]
=1/2[80+90]                    [Because:5th observation=80dB and 6th=90dB]
=1/2(170)
=85
Therefore, median=85dB