15 x .30 = 4.50 discount 15-4.50= 10.50
10.50 x .40 = 4.20
Final cost of shirt 10.50-4.20 = $6.30
Answer:
(B)
Step-by-step explanation:
Volume of fluid in the tank =1000 gallons
Initial Amount of Salt in the tank, A(0)= 30 pounds
Incoming brine solution of concentration 2 pounds of salt per gallon is pumped in at a rate of 4 gallons per minute.
Rate In=(concentration of salt in inflow)(input rate of brine)
The resulting mixture is pumped out at the same rate, therefore:
Rate Out =(concentration of salt in outflow)(output rate of brine)
Therefore:
The rate of change of amount of salt in the tank,
Answer:
1.3 times 10 to the 25th power
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10
. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
1)
csc Ф=hypotenuse / opposite=15/9=5/3
<span>
Answer: csc Ф=5/3</span>
2)
answer: the side CT is the hypotenuse because it is in front of the right angle.
3)
cotan Ф=adjacent/ opposite=12/9=4/3
answer: cotan Ф=4/3
4)
sin (-360º)=sin (0º+(-1)(360º)=sin 0º=0
Answer: sin (-360)=0
5)
cos (-90º)= cos (90º)=0=0
answer: cos (-90º)=0
