For adults in the town of Bridgeport, systolic blood pressure is normally distributed with a mean of 134 mmHg and a standard deviation of 9 mmHg. What percentage of adults in the town have a systolic blood pressure less than 125 mmHg?

The percentage of adults that have a blodd pressure less than 125 mmHg is 15.87%

Step-by-step explanation:

In a normal distribution, we have that in the range:

(-∞, M) we have a 50%

(M, ∞) we have the other 50%.

(the infinite symbols are for notation, obviusly you can not have negative blood pressure)

where M is the mean.

If SD is the standard deviation, in the range

(M - SD, M) we have a 34.13%

Now, the values we have are: M = 134 mmHg, SD = 9mmHg

Then we can replace those values and get:

(M - SD, M) = (125mmHg, 134mmHg) = 34.13%

The range of blodd presure that is smaller than

Then, the range of blood pressure smaller than 125mmHg is the range between (-∞, 125mmHg)

We can calculate this proportion as:

(-∞. 134mmHg) - ( 125mmHg, 134mmHg) = 50% - 34.13% = 15.87%

The percentage of adults that have a blodd pressure less than 125 mmHg is 15.87%

answer: -8.2562234e+13

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.