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saveliy_v [14]
3 years ago
9

Calculate the discriminant and use it to determine how many real-number roots the equation has.

Mathematics
1 answer:
Vladimir79 [104]3 years ago
4 0
In a quadratic equation with the general formula of:

ax^2 + bx + c = 0

The discriminant is equal to b^2 - 4(a)(c). If the answer is a perfect square, then there are two real numbers. If not, then there are no real number root.

The discriminant for this equation is

(-6)^2 - 4(3)(1) = 24

Since 24 is not a perfect square, there are no real number roots.
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Find g o f if f(x) = 2x - 1 and g(x) = x + 2.
bezimeni [28]

Answer:

  (g◦f)(x) = 2x +1

Step-by-step explanation:

(g◦f)(x) = g(f(x)) = g(2x -1) = (2x -1) +2

(g◦f)(x) = 2x +1

__

Substitute f(x) for the argument in the function g(x) and simplify.

7 0
4 years ago
What of the following is true for all parallelograms? (2 points)
NeX [460]

Answer:

a

Step-by-step explanation:

These are basic properties of parallelograms and there's really no way to explain other than memorizing them.

5 0
3 years ago
I need help please. How do I find the value of x?
Zina [86]
X = 58

The angle directly across from the 32 is also 32 degrees because it uses the same lines at the same angles. That's the Vertical Angles Theorem. The line straight across means that is 180 degrees, which is already split in half by the visible 90 degree angle (given by the box in the corner). Since all the angles are on the same side of the line, the 180 degree angle, they should add up to equal 180 degrees. Also, since 90 is half of 180, the 32 degree angle and the x angle should just add up to equal 90 degrees. So, 90 minus 32 equals 58.
7 0
3 years ago
Any help on this?<br> Y=3x+7 <br> Y=x+1
denis23 [38]

Answer:

The answer is (x,y)=(-3,-2)

Step-by-step explanation:

I used the comparison method because I dont know what type of method you needed, sorry. The methods I know would be: the Comparison Method (what I used), the Substitution Method, Elimination Method,Inverse Matrix Method, Cramer's Rule, and the Gauss-Jordan Method.

You can also rewrite this equation to 3x-y=-7 and x-y=-1.

I'm sorry, I dont know what kind of answer you're looking for. I really hope this helps.

7 0
3 years ago
A cube an edge length is 18in. What is it's volume?
Maksim231197 [3]
The answer would be 18*18*18=5832
Good luck ^-^
5 0
3 years ago
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