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mariarad [96]
3 years ago
10

Use the discriminant to describe the roots of each equation. Then select the best description.

Mathematics
1 answer:
wariber [46]3 years ago
4 0
The Discriminant of a quadratic is defined by ⇒     b² - 4ac

In our case:  
a = 1   b = -4  and c = 4

Evaluate the Discriminant:  (-4)² - 4(1)(4) = 16 -16 = 0
Summary of the what the Discriminant tells us:  
If:  
D = a positive value, then we would have two real roots
D = a negative value, then we would have no real roots
D = 0 we would exactly one real root.. 
In our case D = 0.. so that would imply exactly one real root, or in other words choosing from your list of options chose "double root"
You could also verify this by factoring the quadratic into (x - 2)(x -2) implying the double root of '2'

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Pls help asap..thank you!
tia_tia [17]

Answer:

5.25

Step-by-step explanation:

If CD is perpendicular to AB, a right angle is formed by the perpendicular lines at the base of the triangle. If we know that AB is 3 we can divided that by two to use half the triangle and create a right trianle with a base of 1.5 (half of 3) a height of rad 3 now all we have to do is use P-Thags to find AC which is the hypotenuse. After doing 1.5 squared + rad 3 squared = ac squared you will get the answer of AC = 5.25

7 0
3 years ago
Read 2 more answers
What's the algebraic expression for the sum of v and 3
dangina [55]
The sum means addition
v + 3
6 0
3 years ago
Can you help me please?
iren [92.7K]

Finding the volume of a cube involves multiplying with this formula.

Height * Width * Length = volume

To find what the side lengths are, we can take the cube root of 64.

∛64 = 4

Height = 4

Width = 4

Length = 4

These sides are multiplied together to get 64.

The only answer choice that makes sense is Option A.

______

Best Regards,

Wolfyy :)

6 0
3 years ago
Read 2 more answers
If ground beef costs $4.99 per pound, what is the cost of 2 3/4
EleoNora [17]

Answer:

2 x 4.99 = 9.98

3/4 x 4.99 = 3.7425 round it to 3.74

9.98 + 3.74 = 13.73

Answer: $13.73

Step-by-step explanation:

8 0
3 years ago
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Please help me ASAP I’ll mark Brainly
abruzzese [7]
Mark me Brainly answer 2/5
3 0
3 years ago
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