Please help ill mark brainliest

Can anyone help me i was not a school and I need help

pashok25 [27]

so the right answer is of option A.

Hope this will help u...

3 0

3 years ago

Read 2 more answers

Brainlist asap, please help i need to boost my grade in math ♡´･ᴗ･`♡

Lena [83]

Answer:

5250

i hope this is right.

4 0

3 years ago

Read 2 more answers

What is the intersection of plane WZVS and plane STUV?

bulgar [2K]

An easy way to find this is to look at the cross section, and see where the lines meet

8 0

3 years ago

Read 2 more answers

A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values ar

Kobotan [32]

Answer:

The coefficient of variation for the systolic measurements is 12.8 %

The coefficient of variation for the diastolic measurements is 16.3 %

Therefore, we can conclude that the systolic measurements are less dispersed as compared to diastolic measurements.

Step-by-step explanation:

The coefficient of variation is the ratio of standard deviation of the data to the mean of the data. It shows the dispersion in the data set.

Coefficient of variation for the systolic measurements:

Mean = μ = (120 + 128 + 156 + 98 + 154 + 122 + 118 + 136 + 128 + 120)/10

Mean = μ = 1280/10

Mean = μ = 128

Standard deviation = σ = $\sqrt{\frac{1}{N}\sum_ (x-\mu)^{2} }$

Using excel the standard deviation is found to be

Standard deviation = σ = 16.4

Coefficient of variation = σ/μ

Coefficient of variation = 16.4/128

Coefficient of variation = 0.128

Coefficient of variation = 12.8%

Coefficient of variation for the Diastolic measurements:

Mean = μ = (79 + 76 + 75 + 51 + 92 + 87 + 59 + 64 + 72 + 81)/10

Mean = μ = 736/10

Mean = μ = 73.6

Standard deviation = σ = $\sqrt{\frac{1}{N}\sum_ (x-\mu)^{2} }$

Using excel the standard deviation is found to be

Standard deviation = σ = 12

Coefficient of variation = σ/μ

Coefficient of variation = 12/73.6

Coefficient of variation = 0.163

Coefficient of variation = 16.3%

Conclusion:

We can conclude that the systolic measurements (12.8%) are less dispersed as compared to diastolic measurements (16.3%).

7 0

3 years ago

Through: (3, 3) and (-5, 4)

horsena [70]

Hi,

a line is define by the following equation : y = ax+b

where a is the slope, and b the value for x = 0

so you have : a*3 +b = 3 for the first point

a*(-5) +b = 4 for second point

so you have a system : 3a+b =3

-5a+b = 4

so : 3a+b -(-5a) -b = 3-4

3a+5a +b-b = -1

8a = -1

a = -1/8

then a = -1/8 so , in remplacing a by it's value in one equation , b is : 3(-1/8) +b = 3

-3/8 +b = 3

b = 3 +3/8

b = 24/8 +3/8

b = 27/8

let's check : 3 (-1/8) + 27/8 = -3/8 +27/8 = 24/8 = 3

first point is correct

-5( -1/8) + 27/8 = 5/8 +27/8 = 32/8 = 4

second point is correct

line is y = -1/8X +27/8

3 0

3 years ago