Answer:
Step-by-step explanation:
You can use the quadratic formula to determine if a quadratic equation has real or imaginary solutions. The quadratic formula is: . What really matters in this case is the discriminant, which is the stuff under the radical which is: . This is because the solutions are only imaginary, if the discriminant is negative, because then you would be taking the square root of a negative number. So let's look through each example:
; a=25, b=20, c-4: . By examining this one example, it's important to note, if you have one negative number as a or c, then it cancels out the negative sign in the -4, and it becomes positive. So let's look at examples where a or c doesn't equal a negative number OR both a and c equal negative, that way they cancel out and over -4ac is still negative.
; a=25, b=-10, c=4. In this case both a and c are positive so -4ac will remain negative. This gives you: . So this has a negative discriminant meaning it will have no real solution but rather imaginary solutions
It’s b (OA= MA.) I took this quiz last week :)
Answer:
-21 = 6t
Step-by-step explanation:
3t - 7 = 5t
Subtract 3t from each side
3t -7 -3t = 5t -3t
-7 = 2t
Multiply each side by 3 to get 6t
-7*3 = 2t*3
-21 = 6t
Answer:
A = 3 units^2
Step-by-step explanation:
The area of a triangle is
A = 1/2 bh where b is the length of the base and h is the height
b = the distance from B to C = 4 units = 2 ( watch the scale)
h = the distance from A to C along the x axis =6 units = 3 (watch the scale)
A = 1/2 (2)(3)
A = 3 units^2
Answer:
oof thats hard but i think it B OR C
Step-by-step explanation: