Find the median of the following 3,6,7,4,5,9,8,9,7

7

Step-by-step explanation:

Let's first sort it form lowest to highest. So it's going to be 3,4,5,6,7,7,8,9,9. Now, we ifnd the middle ofit, which is 7. The middle number of the sequence is 7 becaue there are 9 numbers total so that means that the 5th number is the median.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

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.