The answer would be 6.08. it can be done on a calculator and then rounded
Answer:
m∠2 = 16°
Step-by-step explanation:
m∠1 + m∠2 = 90°
(Complementary angles)
74° + m∠2 = 90°
m∠2 = 90° - 74°
m∠2 = 16°
Answer:
63
Step-by-step explanation:
x = # in ones place
y = # in tens place
x + y = 9
y = x - 3
substitute:
x + x-3 = 9
2x - 3 = 9
2x = 12
x = 6
y = 3
Swap sides on the second equation and add it to the first.
.. (-x) +(-3) = (9y +15) +(-9y -7x)
.. -x -3 = 15 -7x . . . . eliminate parentheses
.. 6x = 18 . . . . . . . . . add 7x +3
.. x = 3
Solve either equation for y.
.. -3 = 9y +15 . . . substitute for x in the first equation
.. -18 = 9y . . . . . . subtract 15
.. -2 = y . . . . . . . . divide by 9
The solution is (x, y) = (3, -2).