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Finger [1]
2 years ago
10

Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and that scores are not rounded.

What is the probability that a student scores higher than 85 on the exam
Mathematics
1 answer:
AfilCa [17]2 years ago
7 0

Answer:

3

Step-by-step explanation:

cus it's two 80s and 2 5 so 5 minus 2 is 3

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Domain<br> 6<br>range<br>8,7,-5,6<br> is this a function or not​
Fiesta28 [93]

Answer: That is a function!

Step-by-step explanation:

8 0
3 years ago
If you are working with less than, or greater than. If there is a negative do you switch the sign? For example 9t-4&gt;32
kirill [66]

Answer:

Rule:  If working with an inequality and you either mult. or div. by a negative number, you must reverse the direction of the inequality symbol.

Step-by-step explanation:

Your job here is to simplify 9t-4>32, in which the variable (t) is already positive.  Here you do NOT switch signs or reverse the direction of the inequality symbol.  Adding 4 to both sides, we get 9t > 36, or t > 4.

If, however, you had  -9t-4>32 to work with, the situation would be different because t in this inequality is negative.  Adding 4 to both sides results in:

-9t > 36.  To solve for t, we must divide both sides by -9 AND reverse the direction of the inequality symbol:

t < -4.

Rule:  If working with an inequality and you either mult. or div. by a negative number, you must reverse the direction of the inequality symbol.


8 0
3 years ago
Anna found the difference between thirteen and the product of four and a number. Which expression represents this phrase, and wh
liraira [26]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Someone help please please someone
aev [14]

(1-52/2+5)=(1-26+5)=(-25+5)=-20

continuing:

-20*2*6*6= -40*6*6=-240*6=-1440

result: -1440

6 0
3 years ago
Read 2 more answers
A calendar reseller purchases calendars for $5 each and applies a 14.50% markup on selling price. What is the selling price of e
max2010maxim [7]

Answer:

$7.25

Step-by-step explanation:

I'm pretty sure I'm correct. Hope this helps and have a nice day!

7 0
3 years ago
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