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Taya2010 [7]
3 years ago
15

(x+5)²=81 need help quick

Mathematics
1 answer:
Vilka [71]3 years ago
5 0
Square root each side
x-5=positive/negative 9
x=14, and -4
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according the the american hotel and motel association, women are expected to account for half of all business travelers by the
Slav-nsk [51]

Answer:  0.71221

Step-by-step explanation:

We know that for binomial distribution :-

\mu=np\ \ ;\ \sigma=\sqrt{np(1-p)}, where p is the proportion of success in each trial and n is the sample size.

Given : p=0.80  ;   n=20

Then, \mu=20(0.8)=16\ \ ;\ \sigma=\sqrt{20(0.8)(0.2)}=1.79

Let X be the binomial variable.

z-score : z=\dfrac{x-\mu}{\sigma}

For x=9

z=\dfrac{9-16}{1.79}=-3.91

For x=17

z=\dfrac{17-16}{1.79}=0.56

Then, the probability that more than 9 but less than 17 of the hotels in the sample is given by :-

P(9

Hence, the probability that more than 9 but less than 17 of the hotels in the sample = 0.71221

5 0
4 years ago
Directions: Read the following questions. Write the letter of the
12345 [234]

Answer:

1. A

2.D

3.B (parallel lines)

4.B

5. i don't have a picture of the figure so i'm not sure

3 0
3 years ago
Read 2 more answers
72 is 75% of what number?
miss Akunina [59]

96

i belive let me know i f im incorrect

6 0
3 years ago
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Please please please help!! i need this asap and i have no where else to go!
nadezda [96]
1   1   1        2
2  -3   1      -11            -2R1 + R2 → R2
-1  2  -1        8                R1 + R3 → R3

1    1    1      2
0    -5  -1   -15             R2 ⇔ R3
0    3    0     10

1    1    1      2
0    3    0     10             -R3
0   -5   -1    -15

1    1    1      2
0    3    0     10             1/3 R2
0    5    1     15

1    1    1      2                   -R2 + R1
0    1    0     10/3             -5R2 + R3
0    5    1     15

1    0    1      -4/3              
0    1    0     10/3             -R3 + R1
0    0    1      -5/3

1    0    0       1/3             
0    1    0     10/3           
0    0    1      -5/3

Therefore, x = 1/3, y = 10/3, z = -5/3
7 0
3 years ago
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A gardener cuts a plant down by 1 5/8 inches.The plant then grows 9 1/4 more inches. What is the total change in the height of t
Fynjy0 [20]

Answer:

7 7/8 inches

Step-by-step explanation:

Example:

Start with a 3 inch plant

3 - 1 5/8 = 1 3/8

It grows 9 1/4 but you started at threelsdjf;lasjdflkjsdfl

9 1/4 - 1 3/8 = 7 7/8

6 0
3 years ago
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