ANSWER FAST PLEASE 10.
The first four numbers in a quadratic sequence are
shown below.
2, 3, 6, 11,...
What is the next number in the sequence?
A.
16
B.
18
C. 22
D. 27

here the number -5 is all of the following except a rational number.

step-by-step explanation:

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.