Answer:
Damion
Step-by-step explanation:
the arrow sign on the graph suggests the line continues indefinitely, but the value of x cannot be lower than 0 and the value of y cannot be lower than 75
Extraneous solutions, is answers that we get because of squaring both sides of the radical equation, but in reality, they are not going to be the solutions of the given equation.
(√(4x+41))²=(x+5)²
4x+41=x²+10x+25
x²+6x-16=0
(x-2)(x+8)=0
x1=2 , x2=-8,
And now we must to check them by substitution into initial equation
√(4x+41)=x+5
1) x=2, √(4*2+41)=2+5, √49=7, 7=7 true
2) x=-8, √(4*(-8)+41)=-8+5, √9 =-3 false,
so an extraneous solution x=-8
<span>b. 2πn this sounds like the right awnser to me
</span>
Answer:
3770 mm.
Step-by-step explanation:
The diameter of of the wheels is 60mm, that means the radius is 30mm.
Now for one revolution of the wheels, they cover the distance of on the ground.
For 20 revolutions, the distance covered will be 20 times this.
Thus
Which is our answer.