The answer is B. Deductive reasoning.
Use the substitution method for x
y= 4(-2)-1
y= -8-1
y= -9
Answer is y=-9
Answer:
B. x = -1 or x = 4 1/3.
Step-by-step explanation:
2|3x -5| -8 =8
2|3x -5| = 16
|3x -5| = 8
The expression in the vertical lines can be positive or negative so we have 2 equations:
3x - 5 = 8 and 3x - 5 = -8
3x - 5 = 8
3x = 13
<u>x = 13/3 or 4 1/3</u>
3x - 5 = -8
3x = -8 + 5 = -3
x = -1.
Answer:
The answer for that question 2 7/12
Step-by-step explanation:
Convert 8 1/4 to an improper fraction
Answer:
Cos 2theta = -3/5
Step-by-step explanation:
Given that;
tan theta = -2
tan theta = -2/1 = opp/adj
hyp^2 = (-2)^2+1^2
hyp = √4+1
hyp = √5
sin theta = opp/hyp
sin theta = -2/√5
Cos theta = adj/hyp
Cos theta = -2/√5
Cos 2theta = 1-2sin^2 theta
Cos 2theta = 1- 2(-2/√5)^2
Cos 2theta = 1- 2(4/5)
Cos 2theta = 1- 8/5
Cos 2theta = (5-8)/5
Cos 2theta = -3/5
