Tu went to the movies. he bought 2 tickets for $9.50 each, popcorn for $5.00 and 2 drinks for $4.25 each. he gave the clerk two $20.00 bills. which expression can not be used to find the amount of change tu got?

a $40.00-$9.50-$4.25-$5.00
b $40.00 - $9.50 - $9.50 - $5.00 - $4.25 -$4.25
c $40.00 - (2x $9.50) - (2 x $4.25) - $5.00
d (2 x $20.00) - (2 x $9.50) - (2 x $4.25) - $5.00

A

Step-by-step explanation:

A is the only equation that does not account for the fact that Tu bought 2 tickets and 2 drinks.

The rest do: B subtracts the appropriate amounts twice, C multiplies the doubled expenses, and D does the same, just the amount paid is also separated.

A

Step-by-step explanation:

The total bill is

2 tickets = 2* 9.50 = 19

1 popcorn  = 5

2 drinks = 2* 4.25 = 8.50

The total bill is

He wants change from a 40

40 - (2*9.50 +5+2*4.25)   This is C

Distributing the minus sign

40 - (2*9.50) -5-(2*4.25)

Leaving the 40 as 2 twenties

2*20- (2*9.50) -5-(2*4.25)  This is D

Separating the multiplication into addition

40 - 9.50 -9.5 -5 - 4.25 -4.25   This is B

We cannot use A because it is only 1 ticket and 1 drink

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm