Which statement best completes the diagram? Cause the arabian peniinsula is between the Arabian sea and the red sea Effect Arab traders connected merchants from many countries. O Arab tribes did not usually live in permanent settlements. Arab civilizations were isolated from the rest of the world.​

american troops were forced to withdraw following deadly bombings.

explanation:

four sitting presidents have been assassinated while in office but the first was abraham lincoln,

d) in the state of iowa

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13