2.) what is another way to state the relationship between sine & cosine?
a) the sine and cosine of congruent angles are equal.
b) the sine and cosine of supplementary angles are equal.
c) the sine and cosine of complementary angles are equal.
d) they have no relationship

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.