Answer:
Step-by-step explanation:
12x - 3 = 180 - (7x - 26) supplementary angles
19x = 209
x = 11
m∠DEC = 12(11) - 3 = 129°
m∠BCE = 7(11) - 26 = 51°
M∠ADE = 129 - 72 = 57° exterior angle rule
m∠EDB = 180 - 57 = 123° supplementary angles
m∠DBC = 57° corresponding angle to ADE
Answer:
A rational number is a number that can be expressed as a fraction (ratio). This includes whole numbers, square roots that can be solved evenly, negatives, decimals, and repeating decimals that can be solved with a fraction.
- ↔ .5
- 5 ↔ 5.0
- ↔ 2.0
- -13 ↔ -13.0
- 0.38462... ()
An irrational number is a number that is NOT rational. It's the complete opposite!
- π ↔ 3.14159
- .13133133...
- ↔ 0.86603...
- - ↔ -2.23607...
- ↔ 2.23607...
Hope this helps!!!
Answer:
Last one
Step-by-step explanation:
2x+7=x+3
2x+7=3
-×
x+7=3
-7 -7
x=-4