Answer:
B. divide both sides of the bottom equation by 2
Step-by-step explanation
If opposite means additive inverse, then none of the answers is correct
The given system of equations is
4x+2y=4
12x+y=22
The coefficient of y in the top equation is 2 and the coefficient of y in the bottom equation is 1.
One way to make the coefficient of y have opposite sign is to multiply the bottom equation by -2 to get:
4x+2y=4
-24x-2y=-44
Or we divide the top equation by -2
-2x-y=-2
12x+y=22
If opposite means, multiplicative inverse, then dividing through both sides of the bottom equation by 2 gives:
4x +2y=4
6x + ½y=11
Hence the second choice is correct.
The radius of the circle with arc length 40cm and central angle is 60 degree is 38.24 cm.
According to the given question.
Arc length of the circle = 40cm
Central angle, θ = 60 degrees
As, we know that the arc length of the circle, s with the radius r and central angle θ by using the formula
s = θ × (π/180)r
Therefore, the radius r of the circle with arc length 40cm and central angle 60 degrees is given by
40 = 60 × (3.14/180) r
⇒ 40/60 = 0.01744r
⇒ 0.66 = 0.01744r
⇒ r = 0.66/0.01744
⇒ r = 38.240
⇒ r = 38.24 cm
Hence, the radius of the circle with arc length 40cm and central angle is 60 degree is 38.24 cm.
Find out more information about arc length and radius of the circle here:
brainly.com/question/1577784
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Answer: Option 3 is correct
Hope this helps : )
Answer:
m=6/7
Step-by-step explanation:
If you graph both of these points and use the rise over run method getting 6/7 as your slope or m.