5w²-3w-2=0
5w²-5w+2w-2=0
5w(w-1)+2(w-1)=0
(5w+2)(w-1)=0
either w= -2/5 or w=1
Step-by-step explanation:
<h2>stay safe healthy and happy.</h2>
Answer: 0
Step-by-step explanation:
The disciminant \Delta tells you how many real solutions a quadratic equation has, depending on its sign:
\Delta>0\implies\text{2 solutions}\\\Delta=0\implies\text{1 solution}\\\Delta<0\implies\text{no solutions}
Answer:
42 Dimes, 10 Nickels.
Step-by-step explanation:
Dimes are worth $0.10, nickels are worth $0.05.
If D = number of dimes, and N = number of nickels, then the following equations are true:
0.10D + 0.05N = 4.70
D + N = 52
Next, let's multiply the first equation by 10 so that we can subtract the second one from it.
D + 0.50N = 47
(-) D + N = 52
Subtracting the second equation from the first one gives:
-0.5N = -5
-0.5N/-0.5 = -5/-0.5
N = 10
Finally, substitute N in the original second equation to find D.
D + 10 = 52
D + 10 - 10 = 52 - 10
D = 42
Answer:
Step-by-step explanation:
step 1
Find the diameter of the circle
the formula to calculate the distance between two points is equal to
substitute the values
The radius is half the diameter
so
step 2
Find the center of the circle
the center of the circle is the midpoint between the endpoints of the diameter
so
The center is
step 3
Find the equation of the circle
The equation of the circle is
substitute the values
