Does anyone know this ?


Step-by-step explanation:

√196 = 14

√169 = 13

√121 = 11

√225 = 15

√144 = 12

√100 = 10

Hope this helps!!!

Have a great day!!!

√196=14

14*14=196

√169=13

13*13=169

√121=11

11*11=121

√225=15

15*15=225

√144=12

12*12=144

√100=10

10*10=100

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.