Solve the problem. Use the P-value method to test the claim that the population standard deviation of the systolic
blood pressures of adults aged 40-50 is equal to 22 mmHg. The sample statistics are as follows: n = 23, x = 132.2
mmHg, s = 26.6 mmHg. Be sure to state the hypotheses, the value of this test statistic, the P-value, and your
conclusion. Use a significance level of 0.05.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

5+2x=a

asdasdsaadsaddsasds

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

he kicked it up? is this the answer ?

step-by-step explanation: