Answer:
2x+5=12
Step by-step explanation:
2x+5=12
Subtract 5
2x=7
Divide each side by 2
x=3.5
Answer:
y = -1/5x
Step-by-step explanation:
Using the 'y=mx+c' form for the equation:
Find the slope (m):
Since the product of both slopes should be -1 (if they are perpendicular),
s₁s₂ = -1
5*s₂ = -1
s₂ = -1/5x
Hence, the slope (m) is -1/5x.
Substituting the slope value into 'y=mx+c':
y = -1/5x+c -----(1)
Substituting the point (-5,1) into the equation (1):
1 = -1/5 * (-5) + c
1 = 1 + c
c = 0
Substitiuting 'c=0' into 'y = -1/5x+c':
y = -1/5x
Hence,
y = -1/5x
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Answer:
3/5
Step-by-step explanation:
The range of the cosine function is [-1, 1]. Since √41/5 is greater than 1, we eliminate answers a) and b) immediately.
If this angle lies in Quadrant IV, the "adjacent side" is positive. Thus, the cosine of this angle must be 3/5.
An instrument for detecting and measuring small electric currents
Answer:
Vertically opposite angles
