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3 years ago

Can you find the Triangle’s perimeter I’m marking branliest

Mathematics

2 answers:

GarryVolchara [31]3 years ago

6 0

Answer:

To calculate the perimeter of a triangle, add the length of its sides.

Step-by-step explanation:

Flauer [41]3 years ago

3 0

Answer:

14x - 4

Step-by-step explanation:

perimeter is the sum of all sides

6x-8 + 3x+7 +5x-3

combine like terms to get:

14x -4

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Can Someone help me. PLeeeease..............

aivan3 [116]

I believe the answer is 24 times
hope this helps!

7 0

3 years ago

The blood cholesterol levels of men aged 55 to 64 are approximately normally distributed with mean 222 mg/dl and standard deviat

tatiyna

Answer:

It is provided that 10% of the men aged 55 to 64 have cholesterol level 270 mg/dl or higher.

Step-by-step explanation:

Let X = blood cholesterol levels of men aged 55 to 64 years.

The random variable X follows a Normal distribution with mean μ = 222 mg/dl and standard deviation σ = 37 mg/dl.

It is provided that 10% of the men aged 55 to 64 have cholesterol level x mg/dl or higher.

Compute the value of x as follows:

$P(X\geq x)=0.10\\P(\frac{X-\mu}{\sigma}\geq \frac{x-222}{37})=0.10\\P(Z\geq z)=0.10\\1-P(Z$

Use the z-table to compute the value z for the probability 0.90.

The value of z is 1.29.

Compute the value of x as follows:

$z=\frac{x-\mu}{\sigma}\\1.29=\frac{x-222}{37} \\x=222+(1.29\times37)\\=269.73\approx270$

Thus, 10% of the men aged 55 to 64 have cholesterol level 270 mg/dl or higher.

3 0

3 years ago

A therapist named Dr. Brown specializes in adolescent anxiety and has been collecting information about the frequency of all cli

irina [24]

Alex's z score of 1.6 means her frequency of anxiety symptoms are 1.6 standard deviations more than the mean of all patients.

Z-score is defined as the relationship between a particular value or data to the mean of all the data present in a normal distribution. When the z-score is zero that means the data is equal to the mean.

$Z=\frac{x-\mu}{\rho}$ where x=raw data, $\mu$ =mean and $\rho$ = standard deviation

Standard Deviation is a measure of how dispersed a data set is around its mean or central value. Numerically Standard deviation is defined as the square root of the variance of the distribution.

Lower standard deviation means the data is clustered together
A higher standard deviation means that the data is spread out over a larger area.

In the given problem as the z-score of Alex is given as 1.6, we can infer that the frequency of anxiety symptoms for Alex is 1.6 standard deviations more than the mean data.

Therefore from the above formula

$x=1.6 \rho+\mu$