Answer:
i will try my best to explain this
Step-by-step explanation:
-(-3) =3 because
how i do it is i move the negative sign to the subtraction sign and together it becomes a plus sign
so it is a positive
You can also look at the screenshots and see for yourself if i didn't explain it very well for you
The answer is 4 days comment if u need work
Answer:
2/7 gallons
Step-by-step explanation:
2 gallons per 7 hours.
2 divided by 7 = 2/7
sorry if im wrong.
The ladder is 10 ft long (9.899 ft to be more precise).
Since AED forms a straight line, all involved angles sum to 180°. Therefore AEB + BED = 180. Also, since EC bisects BED, BEC = CED, and BED = 2× CED. Now to substitute the first equation:
AEB + BED = 180
AEB + 2×CED = 180
11x-12 + 2(4x+1) = 180
11x-12+8x+2 = 180
19x-10 = 180
19x-10+10 = 180+10
19x = 190
x = 10
So what is m<AEC?? It is the sum of AEB + BEC, and since BEC = CED we can say that:
AEC = AEB + CED
AEC = 11x-12 + 4x+1 = 15x-11 = 15(10)-11 = 150-11
m<AEC = 139°
