Answer:
Domain {-1,0,6,10}
Range: {3}
Yes it's a function.
Step-by-step explanation:
Domain is all the x's used by your relation. In case of a set of points all you have to do is your list x's. Domain: {-1,0,6 ,10}.
Range is all the y's being used by your relation. In case of a set of points all you have to do is list your y's. Range {3}.
Function: For it be a function no x can be paired with more than one y. Basically all the x's have to be different. In they are in this case so it is a function.
Answer:
-2. 46
- 9.54
Step-by-step explanation:
- 2x²+12x-7=0
- 2x²+12x+18= 25
- 2*(x²+6x+9)=25
- 2*(x+6)²= 5²
- x+6= 5√2/2 ⇒ x= 5√2/2 -6 ≈ -2. 46
- x+6= -5√2/2 ⇒ x= -5√2/2 -6 ≈ - 9.54
Answer:
5 more weeks
Step-by-step explanation:
5 more weeks if he already sold 15. 10 more weeks if you exclude the 15 he already sold.
Answer:
11.39
Step-by-step explanation:
a^3
2 1/4 = 2.25^3
11.39
:)
Answer:
x=-12 and -3
Step-by-step explanation:
The quadratic formula is
.
It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. We will substitute a=1, b=15 and c=36.
![x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\x=\frac{-15+/-\sqrt{(15)^2-4(1)(36)} }{2(1)}\\x=\frac{-15+/-\sqrt{225-144} }{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%2B%2F-%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D%5C%5Cx%3D%5Cfrac%7B-15%2B%2F-%5Csqrt%7B%2815%29%5E2-4%281%29%2836%29%7D%20%7D%7B2%281%29%7D%5C%5Cx%3D%5Cfrac%7B-15%2B%2F-%5Csqrt%7B225-144%7D%20%7D%7B2%7D)
We will now simplify and solve.
![x=\frac{-15+/-\sqrt{81}}{2}\\x=\frac{-15+/-9}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-15%2B%2F-%5Csqrt%7B81%7D%7D%7B2%7D%5C%5Cx%3D%5Cfrac%7B-15%2B%2F-9%7D%7B2%7D)
x=-12 and x=-3