PLZ HELP I WILL GIVE BRAINLIEST

1.) The temperature was 16 degrees below 0 (in Fahrenheit) today.
Write a signed number to represent this temperature.

2.) Kevin's test score average increased by 3 points this semester.
Write a signed number to represent this change in average.

1) -16

2) +3

Step-by-step explanation:

1) below represents negative sign

2) increase means posivie sign

the correct answers i think are b. and d.

give me brainliest if it is correct!

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.