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elena-s [515]
3 years ago
12

What is the value of x? 4 4√2 8 8√2

Mathematics
1 answer:
vaieri [72.5K]3 years ago
7 0
I believe its the last one 8v2
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The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what
harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

\mu=25,\sigma=4,x_1=20,x_2=30

The z-score formula is given by

z-\text{score}=\frac{x-\mu}{\sigma}

For x_1=20

z_1=\frac{20-25}{4}\\\\z_1=-1.25

For x_2=30

z_2=\frac{30-25}{4}\\\\z_2=1.25

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

6 0
3 years ago
Read 2 more answers
Bottles of water sell for $1.50 each.
anyanavicka [17]
Y axis is 1.5 and x axis is 1 and make them meet in the middle and add and repeat the process
4 0
3 years ago
How many total inches are in 7 feet 4 inches and 4 feet 10 inches ??? A) 257 inches B) 130 inches C) 126 inches D) 146 inches wh
Gelneren [198K]
The correct answer is D, 146 inches.
7 x 12 = 84
4 x 12 = 48
84+48+4+10 = 146
5 0
3 years ago
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Tickets to a dance performance cost $9 for adults and $5 for kids. A group purchased 15 tickets and spent a total of $91. How ma
dem82 [27]

Answer:9 adult tickets and 2 kid tickets

Step-by-step explanation:

5 0
2 years ago
A triangle has sides with lengths of 3 feet, 3 feet, and 5 feet. Is it a right triangle?
Anestetic [448]

Step-by-step explanation:

3^2 + 3^2 =5^2

9 +9 =25

18 =25

False 18 is not equal to 25.

7 0
2 years ago
Read 2 more answers
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