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max2010maxim [7]
2 years ago
14

Plz help me, T-T I really need this is for class

Mathematics
1 answer:
vekshin12 years ago
4 0

Answer:

Ask: To check and make sure your answer is correct

Share: Subtracting a number is the same as adding its opposite. So, subtracting a positive number is like adding a negative; you move to the left on the number line. Subtracting a negative number is like adding a positive; you move to the right on the number line.

Step-by-step explanation:

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Step-by-step explanation:

6 0
3 years ago
The final scores of students in a graduate course are distributed normally with a mean of 72 and a standard deviation of 5. What
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Answer:

0.8041

Step-by-step explanation:

We know that  

μ=72  and  σ=5

and P(65<X<78)

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P( 65<X<78 )=P( 65-72< X-μ<78-72)

P((65-72)/5

P(65

To fine the Z values:

P (-1.4

From the standard normal tables:

P (Z

to find P ( Z<-1.4)

P ( Z

From the standard normal tables:

P ( Z

Therefore

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8 0
3 years ago
A recipe for chocolate chip cookies calls for 1 1/4 cups of flour .If you are making 2 1/4 recipes,how many cups of flour are ne
Oksana_A [137]

Answer:

2 11/12 cups of flour

Step-by-step explanation:

2 recipes are 2 1/2 cups of flour  

1/3 is 1/3 x 1 1/4= 1/3 + 1/12= 5/12  

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