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2 years ago

Select the quadratic equation that has no real solutions.

1 answer:

3 0

Answer: In the quadratic formula, if the discriminant is greater than or equal to 0, then the solutions to the quadratic equation will be real numbers. ... Looking at the graph of a quadratic equation, if the parabola does not cross or intersect the x-axis, then the equation has no real solution.

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Which polynomial represents twice the sum of -5x^2-x+6 and 7x^2+x-1?

elena-14-01-66 [18.8K]

The polynomial that represent twice the sum of $-5x^{2}$ - x +6 and 7 $x^{2}$ + x -1 is : 4 $x^{2}$ +10

<h3>What is a polynomial?</h3>

A polynomial is any algebraic expression that has the least value of the power of its variable as 2.

When the highest value of the polynomial is 2, it is a called a quadratic expression.

Analysis:

2( -5 $x^{2}$ -x +6 + 7 $x^{2}$ +x -1)

2( 2 $x^{2}$ + 5) =

4 $x^{2}$ + 10

In conclusion, the polynomial that represents the above expressions is 4 $x^{2}$ + 10

Learn more about polynomials: brainly.com/question/2833285

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7 0

1 year ago

The cone in the figure below has a volume of 72π cubic centimeters and a height of 6

AleksAgata [21]

Answer:

6 cm

Step-by-step explanation:

The volume of a cone = (1/3) πr²h

72π = (1/3) π r² 6

72 = (1/3) r² 6

Divide both sides by 6

12 = (1/3) r²

Multiply both sides by 3

36 = r²

So r (radius) = 6 cm

8 0

3 years ago

(08.05 lc) of a semicircle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional

PIT_PIT [208]

It would be a sphere

3 0

3 years ago

Read 2 more answers

Draw a diagram to show how many twelfth are in 3. Describe a situation in which you would need to know how many twelfth are in 3

anastassius [24]

There are 36 12s in 3

5 0

3 years ago

24. Solve<br>x + 2y = 3<br>x-y=6

musickatia [10]

Answer:

x=−2y+3 and x=y+6

Step-by-step explanation:

x+2y=3

x+2y+−2y=3+−2y

x=−2y+3

x−y=6

x−y+y=6+y

x=y+6

3 0

3 years ago