1.The strength of an electromagnet<span> can be adjusted by the amount of electric current allowed to flow into it.
2. Electromagnets are much stronger than regular magnets
3. Electromagnets use coils while regular magnets use magnetic materials like Iron.
Brainliest?</span>
Answer:
1. 4
2. 16
3. 9
Step-by-step explanation:
Completing the square requires a quadratic in 
form. Once in this form, calculate 
.
1. 
2. 
3. Requires you divide everything by 3 first.
100 times 35=3500 she can go 3500 miles on the free gas. she can go round trip to see her cousin on free gas because 1650+1650 is less than 3500
Answer:
<h3>-5(2q - 3)</h3>
Step-by-step explanation:
The equation is f(x) = 4x^2 - 4.
You can find this by using an equation with parenthesis that equal each of the zeros.
f(x) = (x - 1)(x + 1)
Now, this equation will not give us the vertex that we're looking for. So, we must add a constant being multiplied to the front of it.
f(x) = c(x - 1)(x + 1)
Now we can find the constant by putting our vertex into the equation and solving.
f(x) = c(x - 1)(x + 1)
-4 = c(0 - 1)(0 + 1)
-4 = c(-1)(1)
-4 = -1c
c = 4
Now we put the c into the original equation and solve for standard form.
f(x) = 4(x - 1)(x + 1)
f(x) = 4(x^2 - 1)
f(x) = 4x^2 - 4
