Answer:
1: 
and the same, but its -3 instead of 3
2: x=9-3y
Answer:
60°
Step-by-step explanation:
We'll begin by calculating EC. This can be obtained as follow:
Angle EAC = 39°
Hypothenus = EA = 3.7 m
Opposite = EC =?
Sine EAC = Opposite /Hypothenus
Sine 39 = EC / 3.7
Cross multiply
EC = 3.7 × Sine 39
EC = 2.3 m
Finally, we shall determine angle BEC. This can be obtained as follow:
Adjacent = EC = 2.3 m
Hypothenus = BC = 4.6 m
Angle BEC =?
Cos BEC = Adjacent / Hypothenus
Cos BEC = 2.3 / 4.6
Cos BEC = 0.5
Take the inverse of Cos
BEC = Cos¯¹ 0.5
BEC = 60°
Thus, angle BEC is 60°
Answer:
Step-by-step explanation:
In the attachment!
Answer:
Mixed number: -12 2/15
Improper fraction: -182/15
Step-by-step explanation:
2 4/5 x -5 2/3
First, change into improper fractions
14/5 x -13/3
= -182/15
= -12 2/15
Hope this helps
1. 7m² + 6.5n - 4n + 2.5m² - n
7m² + 2.5m² + 6.5n - 4n - n
9.5m² + 2.5n - n
9.5m² + 1.5n = 1.7
