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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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6 0
3 years ago
Please please help me I need help Ill give brainy please help
zzz [600]

Answer:

45 cm

Step-by-step explanation:

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7 0
3 years ago
Please help me, will mark!!
BabaBlast [244]

Answer:

613 meters

Step-by-step explanation:

1)

cos(50 degrees)=324/x

x*cos(50 degrees)=324

x=324/cos(50 degrees)

x=around 504.1

2)

cos(35 degrees)=324/x

x*cos(35 degrees)=324

x=324/cos(35 degrees)

x=around 395.5

now lets find the distance in between the two people:

Distance from Shively to the tower

tan(50 degrees)=x/324

x=324*tan(50 degrees)

x= around 386.1

Distance from Sparzak to the tower

tan(35 degrees)=x/324

x=324*tan(35 degrees)

x=around 226.9

total distance=386.1+226.9=613 meters

8 0
3 years ago
Which answer describes the type of sequence? 3,4,5,6,...
In-s [12.5K]

Answer:

Arithmetic Sequence

Step-by-step explanation:

we know that

In an <u><em>Arithmetic Sequence</em></u> the difference between one term and the next is a constant, and this constant is called the common difference

we have

3,4,5,6,...

Let

a_1=3\\a_2=4\\a_3=5\\a_4=6

a_2-a_1=4-3=1

a_3-a_2=5-4=1

a_4-a_3=6-5=1

so

the difference between one term and the next is a constant

The common difference is equal to 1

This is an Arithmetic Sequence

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3 years ago
Write the equation of the line containing each pair of points
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