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rodikova [14]
2 years ago
12

If 3.2x10^4 is the length of a park in meters and 2.5x10^6 is the width in meters, what is the area of the park if it is in the

shape of a rectangle?
Mathematics
1 answer:
weqwewe [10]2 years ago
4 0

Answer:

area: A = 8 m^2

Step-by-step explanation:

Area of a rectangle:  A = ab

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X is normally distributed with a mean of 100 and a standard deviation of 15. What is the probability of randomly sampling a scor
VikaD [51]

Answer:

Using calculator: 0.0415

Using Z-score Table: 0.0418

Step-by-step explanation:

There are two ways you can solve this problem.

1. Use the normal distribution function on a calculator.

Entered values:

Lower Limit: 126

Upper Limit: 999999999999999... (To encompass all the data)

Standard Deviation: 15

Mean: 100

2. Find the Z score and look up probabilities on table.

Formula for Z score:

Z=\frac{x-mean}{standard deviation} \\\\Z= \frac{126-100}{15}=1.7333...

Z = 1.7333

This means that the value 126 is 1.733 standard deviations away from the mean. We can look this value up on the Z table to find its corresponding probability.

This will show us the probability of the random sampling being equal to or lower than 126.

P = 0.9582

So to find the probability of it being above, we simply just calculate the inverse as all probabilities on the curve = 1.

1-0.9582 = 0.0418

NOTE: Values found from the table will usually be a bit different from if you find it from a calculator, the one you need will depend on the method you use in class.

Hope this helped!

6 0
2 years ago
Paul and sandy moede signed an 8000 note at citizen bank. Citizen’s charges a 6.50% discount rate. Assume the loan is for 300 da
irina [24]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
1. Multiply: (3x - 6)(2x + 7)
kati45 [8]
A. the answer is 6x^2+9x-42
5 0
3 years ago
Read 2 more answers
Simplify each expression. -4x + 1 + 6 - (-9x)
IceJOKER [234]

Step-by-step explanation:

-4x+1+6-(-9x)

-4x+7-(-9x)

5x+7

7 0
2 years ago
The lengths (in miles) of two highways after t years of construction can be modeled by 20t + 150 and 15t+ 200. What is the diffe
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Step-by-step explanation:

13.5 is the difference of the length of the roads

3 0
2 years ago
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