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almond37 [142]
2 years ago
10

At the end of any year a car is worth 5% less than what it was worth at the beginning of the year. if a car was worth $9500 in D

ecember 2016,then its value in January 2016 was?​
Mathematics
1 answer:
IrinaVladis [17]2 years ago
4 0

Answer:

$10,000.

Step-by-step explanation:

You divide by 95% ( = 0.95)

So it is 9500 / 0.95.

= 10000

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What are the slope and the y-intercept of the linear function that is represented by the table?
mafiozo [28]

Answer:

slope is -2 and the y-intercept is 12

Step-by-step explanation:

a key thing to remember: x is always equal to 0 when finding the y-intercept.

so if you look at the table for where 0 is, you get the point (0,12) meaning the y-intercept is 12.

to find the slope use the equation: slope= change in y/change in x

you can use any two points to find this.

lets take the points of the x-intercept (6,0) and the y-intercept (0,12)

12-0/0-6

12/-6

-2 = slope

8 0
3 years ago
A population of bacteria grows by a factor of 1.32 in one hour. What is the hourly growth rate?
pantera1 [17]
SInce the 'growth factor' is 1.32, the 'growth rate' is .32 or 32%
6 0
3 years ago
Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights
Fed [463]

Answer:

a) 615

b) 715

c) 344

Step-by-step explanation:

According to the Question,

  • Given that,  A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 732 babies born in New York. The mean weight was 3311 grams with a standard deviation of 860 grams

  • Since the distribution is approximately bell-shaped, we can use the normal distribution and calculate the Z scores for each scenario.

Z = (x - mean)/standard deviation

Now,

For x = 4171,  Z = (4171 - 3311)/860 = 1  

  • P(Z < 1) using Z table for areas for the standard normal distribution, you will get 0.8413.

Next, multiply that by the sample size of 732.

  • Therefore 732(0.8413) = 615.8316, so approximately 615 will weigh less than 4171  

 

  • For part b, use the same method except x is now 1591.    

Z = (1581 - 3311)/860 = -2    

  • P(Z > -2) , using the Z table is 1 - 0.0228 = 0.9772 . Now 732(0.9772) = 715.3104, so approximately 715 will weigh more than 1591.

 

  • For part c, we now need to get two Z scores, one for 3311 and another for 5031.

Z1 = (3311 - 3311)/860 = 0

Z2 = (5031 - 3311)/860= 2  

P(0 ≤ Z ≤ 2) = 0.9772 - 0.5000 = 0.4772

  approximately 47% fall between 0 and 1 standard deviation, so take 0.47 times 732 ⇒ 732×0.47 = 344.

5 0
2 years ago
Translate this sentence into an equation.<br><br> The difference of Mai's age and 12 is 60
daser333 [38]

Answer: 72

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Can someone help me with this?
Natalija [7]

use the Pythagoras theorem method

a squared plus b squared equals c square

8 0
3 years ago
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