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Gnoma [55]
3 years ago
9

scores on a test have a mean of 67 and a standard devation of 10. michelle has a score of 87. convert michelle score to a z-scor

e?​
Mathematics
1 answer:
klasskru [66]3 years ago
6 0

Answer:

z-score = 2.

Step-by-step explanation:

The z-score = (x - m) / d   where x =the person's score, m = the  mean and d = the standard deviation.

So we have (87-67)/10

= 2.

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How do u order decimals ??
Furkat [3]

Answer:

To order decimals, you first need a range of values.

Step-by-step explanation:

For example, if there are 5 values: 0.25, 0.87,0.19,0.89 and 0.98

First, look at the first digit after the decimal. The smallest digit is the smallest so far. In this case, it is 0.19 as '1' was the smallest digit. Second would be 0.25 because 2 is the second smallest digit here.

Now, we have 3 remaining numbers: 0.87, 0.89 and 0.98

You can notice that both 0.87 and 0.89 have the same first digit after the decimal.

Do fix this problem, look at the second digit and decide the smallest one. In this case, it is 0.87.

This means the order will go like this if it is smallest to largest: 0.19, 0.25, 0.87, 0.89, 0.98.

If it is largest to smallest, do it the other way around.

Hope this helped!

4 0
2 years ago
How to factor -12n -20
leonid [27]

Answer:

-4(3n + 5).

Step-by-step explanation:

The common factor is - 4 so you take this out to give:

-4(3n + 5).

4 0
4 years ago
Read 2 more answers
HELP ME PLEASE ‼️‼️‼️‼️‼️
Zielflug [23.3K]

Answer:

Step-by-step explanation:

Derivatives problem! I love these!

To maximize revenue: Find where R(p) has a maximum

1. Find the derivative

-4p^2 + 2000p - 3000

= (2)(-4p) + (1)2000 - (0)3000

= -8p + 2000

2. Find where the derivative = 0

-8p + 2000 = 0

2000 = 8p

250 = p

<u>a. Price = 250</u>

3. Plug in p to your original equation

-4(250)^2 + 2000(250) - 3000

= 247,000

<u>b. Maximum revenue: $247,000</u>

7 0
4 years ago
A lender estimates the closing costs on a home loan of $90,000 as listed below. Closing Cost Charge Loan origination $180 Title
AURORKA [14]

Answer:

The answer would be,

a. The lender made a very good estimate; it was within 0.25% of the actual closing costs.

Step-by-step explanation:


6 0
4 years ago
The front door of a house is 80 inches tall what is the volume of the door
liberstina [14]

Answer:

I think it is 36 inches times 80

4 0
3 years ago
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