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3 years ago

Find the discriminant of each quadratic equation then state the number and type of solutions

Mathematics

1 answer:

wariber [46]3 years ago

3 0

N=3
Because 6+6=12
Hope this helps

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Help me with this if anyone can! Please and thank you

Valentin [98]

ANSWER

$y = 3x - 3$

EXPLANATION

Let

$y = mx + c$

be the equation.

We can choose any two ordered pairs to determine the equation of the relation.

$(6,15) \: and \: (8,21)$

We find m using the formula;

$m = \frac{y_2-y_1}{x_2-x_1}$

$m = \frac{21 - 15}{8 - 6} = \frac{6}{2} = 3$

The equation becomes

$y = 3x + c$

When x=6, y=15.

This implies that,

$15 = 3(6) + c$

$15= 18 + c$

$15 - 18= c$

$c = -3$

The equation of the relation is therefore,

$y = 3x -3$

3 0

3 years ago

Mrs James is a boutique owner who recently started selling Over-The-Knee boots. She buys them from her supplier for $300 per set

Lelechka [254]

Answer: $39.60

Step-by-step explanation:

300/10 for one pair of boots is $30

30/100=x/132

x is the selling price

Cross multiply: 100x=3960

Divide: x=39.60

3 0

2 years ago

Read 2 more answers

I need help on my math.

Elenna [48]

Answer:10 in on left side 13 on top

Step-by-step explanation:

8 0

3 years ago

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A rectangle garden has a width that is 8 feet less than twice the length. Find the dimensions if the perimeter is 20 feet

Lana71 [14]

Width = 4ft

Length = 6ft

Explanation:

Let length = l ,

So, width = 2l-8

Perimeter of rectangle = 2x(length + width)

According to the question,

$20ft = 2X(l + 2l-8)\\20ft = 2X(3l -8)\\ 10ft = 3l-8\\18ft = 3l \\ l = 6ft$

Hence,

Width = 4ft

Length = 6ft

6 0

3 years ago

In ABC, what is the value of x 5.5 6.5 55 65

vekshin1

Answer:

( B ) x = 6.5

Step-by-step explanation:

We know that all the angles of a triangle equal 180 when added together. So lets make an equation for this question.

(10x-10) + (10x+8) + 8x = 180

I just took all the angles and added them together to make 180. Now solve for x.

10x - 10 + 10x + 8 + 8x = 180 (combined like terms)

28x -2 = 180 (added 2 to both sides)

28x = 182 (divided both sides by 28)

x = 6.5

6 0

3 years ago

Read 2 more answers