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Evgen [1.6K]
3 years ago
10

Don't get it at all I am have lots of trouble

Mathematics
1 answer:
maks197457 [2]3 years ago
5 0
47. B 9
48, D 81
49. A  5
50 C 45
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The Customer Service Center in a large New York department store has determined that the amount of time spent with a customer ab
Paul [167]

Answer:

0.6395 ; 0.9657 ; 0.7333

Step-by-step explanation:

Given that:

Mean (m) = 10.1

Standard deviation (s) = 2.8

Obtain the following probabilities :

a) less than 10 minutes

P(x < 10)

Z = (x - m) / s

Z = (10 - 10.1) / 2.8

Z = 0.1 / 2.8

Z = 0.0357142

P(Z < 0.357) = 0.6395 ( Z probability calculator)

(b) longer than 5 minutes

P(x > 5)

Z = (x - m) / s

Z = (5 - 10.1) / 2.8

Z = −1.821428

P(Z < - 1.821) = 0.9657 ( Z probability calculator)

(c) between 8 and 15 minutes

P(8 < x < 15)

P(x < 8)

Z = (x - m) / s

Z = (8 - 10.1) / 2.8

Z = − 0.75

P(Z < - 0.75) = 0.22663 ( Z probability calculator)

P(x < 15)

Z = (x - m) / s

Z = (15 - 10.1) / 2.8

Z = 1.75

P(Z < 1.75) = 0.95994 ( Z probability calculator)

P(Z < 1.75) - P(Z < - 0.75)

0.95994 - 0.22663 = 0.7333

4 0
3 years ago
How do you write 8.04 × 104 in standard form?<br> (plzzz help) (NO LINKS)
irina [24]

Answer: 8.361599999999999 x 10 2

Step-by-step explanation:

5 0
3 years ago
Use synthetic division to find P (-10) for P(x)=2x^3+14x^2-58x
Savatey [412]
The polynomial remainder theorem states that the remainder upon dividing a polynomial p(x) by x-c is the same as the value of p(c), so to find p(-10) you need to find the remainder upon dividing

\dfrac{2x^3+14x^2-58x}{x+10}

You have

..... | 2 ...  14  ... -58
-10 |    ... -20  ... 60
--------------------------
..... | 2 ...  -6  ....  2

So the quotient and remainder upon dividing is

\dfrac{2x^3+14x^2-58x}{x+10}=2x-6+\dfrac2{x+10}

with a remainder of 2, which means p(-10)=2.
5 0
4 years ago
Answer this and give an explanation.
Margarita [4]

Answer:

3/9

Step-by-step explanation:

1/3*3

4 0
3 years ago
Read 2 more answers
When do you need to use two number lines to compare two fractions
Nat2105 [25]
When your not sure if the fraction is the same
5 0
3 years ago
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