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Gelneren [198K]
3 years ago
8

Is 7/20 equivalent to 7 hundreds

Mathematics
1 answer:
scoundrel [369]3 years ago
6 0
No. 7/20 is NOT equivalent to 7 hundreds or 7 hundredths.

7 hundreds is 700 in standard form.

7/20 will become a decimal number. It is equal to 0.35

0.35 is not equal to 700.

7 hundredths in decimal form is 0.07

0.35 is still not equal to 0.07.
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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
3 years ago
Bridget is making greeting cards, which she will sell by the box at an art fair. She paid $30 for a booth at the fair and the ma
LiRa [457]

Answer:

when she sold 10 cards, it will cover all her cost.

Step-by-step explanation:

Profit(without charge of booth)=5x-2x

Profit=3x-30

Calculating:

3x=30

x=10

8 0
3 years ago
How many decimals are between 0,5 and 0,6 ?
dusya [7]

Between 0.5 and 0.6 can be an infinity.

<em><u>ex:</u></em><u /><u><em /></u><em />

0.51

0.52

0.517

0.5169889549.......

0.5999999999..........

etc.

5 0
3 years ago
Read 2 more answers
Two functions are shown below.
fenix001 [56]

Answer:

the two functions intersect at (5,22)

Step-by-step explanation:

7 0
3 years ago
The equation yˆ=11.89x−15,345.2 predicts a population of a town in year x.
STatiana [176]

Answer:

The answer to your question is 8649 persons

Step-by-step explanation:

Data

Equation              y = 11.89x - 15345.2

Year = x = 2018

Process

1.- Just substitute x in the equation

                            y = 11.89 (2018) - 15345.2

2.- Multiply 11.89 by 2018

                            y = 23994.02 - 15345.2

3.- Subtract to find x

                           y = 8648.82

4.- Conclusion

There was 8649 persons in 2018.

7 0
3 years ago
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