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Leona [35]
3 years ago
14

what is the product in simplest form state any restrictions on the variable x+​2/​x-​1/​x+​4/​x^​2+​4*​x-​5

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
5 0

When it is simplified it is (\frac{(x+2)(x+5)}{x+4})

1 or 5

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The mean of the data set is 40 and one standard deviation is 5. About what percent of the numbers fall between 35 and 50?
Nataly [62]

Answer:

The correct option is D. 81.8%

Step-by-step explanation:

Mean of the data set is given to be 40

⇒ μ = 40

Standard deviation of the data set is given to be 5

⇒ σ = 5

Now we are supposed to find out what percent of the numbers fall between 35 and 50

\implies z =\frac{x-\mu}{\sigma}

Now for P(35 < x < 50) :

Substitute x = 35 ⇒ z = -1

Substitute x = 50 ⇒ z = 2

So, P(-1 < z < 2) = P(z < 2) - P(z < -1)

⇒ P(-1 < z < 2) = 0.9772 - 0.1587

⇒ P(-1 < z < 2) = 0.8185

⇒ P(-1 < z < 2) = 81.8%

Therefore, 81.8% percent of the numbers fall between 35 and 50

Hence, The correct option is D. 81.8%

8 0
3 years ago
The segments shown below could form a triangle. <br><br>True <br>or<br>False​
denpristay [2]

Answer:

False

Step-by-step explanation:

It would form a deformed triangle.

4 0
3 years ago
SOMEONE plezzz help<br> (b–2)(b+2)(b^2+4)
AnnZ [28]
(b-2)(b-2)(b^2+4)

= (b^2-4b+4)(b^2+4)
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8 0
3 years ago
Please could someone answer this question I would be appreciated​
allochka39001 [22]

Answer:

Step-by-step explanation:

Area = pi r^2

r = 7 cm

pi = 3.14

Area = 3.14 * 7^2

Area = 3.14 * 7*7

Area = 153.86

Area = 153.9      rounded.

8 0
3 years ago
The sum of two numbers is 20. One number is 4 less than the other. Find the numbers
exis [7]

Answer:8 and 12

Step-by-step explanation: 8 is 4 less than 12 and 12 and 8 equals 20

6 0
2 years ago
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