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Ghella [55]
3 years ago
7

Your credit card uses the unpaid-balance method to calculate finance charge. the periodic rate is 1.85%. the previous balance is

$478.68, you made a payment of $210 and had a credit of $89.95. your new purchases are $38.50, $65.74, and $125.61. what is your new balance?
Mathematics
1 answer:
Sholpan [36]3 years ago
4 0
$416.14
478.68-210-89.55+38.50+65.74+125.61=408.58x.0185=7.56
So 408.58+7.56=416.14
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WORTH 19 POINTS!!
marta [7]
You have to make a cos graph that starts its minimum and of -2, has an amplitude of 10, a period of 10 and  a maximum of 18.
I decided to use a cos graph since cos graphs start at their minimum or maximum unlike a sine graph that starts halfway between the minimum and maximum.  You also know the amplitude has to be 10 since 18+2=20 and 20/2=10.  We were also told that the water wheel completels a rotation every 10 minutes which means the period is 10 minutes.

lets start of with a regular cos(x) graph.  This starts on its maximum instead of minimum so we have to multiply it by -1 to get -cos(x) which does start on its minimum.

-cos(x) has an amplitude of 1 instead of 10, to fix that we multiply it by 10 to get -10cos(x) which has an amplitude of 10.
 
-10cos(x) has a period of 2π instead of 10, to fix this we multiply the x by 2π/10 to get -10cos((π/5)x) which now has a period of 10.

-10cos((π/5)x) has a minimum of -10 and maximum of 10 instead of a minimum of -2 and maximum of 18, to fix this we add 8 to -10cos((π/5)x) to get -10cos((π/5)x)+8 which does have a minimum of -2 and maximum of 18.

Therefore the answer is y=-10cos((π/5)x)+8. x being time in minutes and and y being the height in feet.  

I hope this helps.  Let me know if anything is unclear.
8 0
3 years ago
ABDC is a rhombus with side length 10cm
kenny6666 [7]
Cm2 equation equals the equivelens
4 0
3 years ago
Right triangle ABC is shown.
Blababa [14]

Answer:

i think that is same dude like cos

Step-by-step explanation:

you can simply use a net okay dude

4 0
3 years ago
Read 2 more answers
Find the value of x. Round your answer to the nearest tenth. Show your work please!
artcher [175]
180=11+2x
-11 -11
169/2=2x\2
x=84.5
3 0
3 years ago
PLEASE HELP! and also please show your work!!
FinnZ [79.3K]

Answer: d) b = 12

2/3.b - 1/3.b + 12 = 16

⇔ 1/3. b = 16 - 12

⇔ 1/3.b = 4

⇔ b = 4.3 = 12

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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