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:

Step-by-step explanation:
Recall that the formula for density is:

therefore for this case we have:

Answer:
The square root of 600 is 24.49489743
Step-by-step explanation:
Answer:
2x(5+13)
Step-by-step explanation:
add then multiply by 2