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Andrei [34K]
2 years ago
14

Find the discriminant of x²+6x+9=0 ​

Mathematics
1 answer:
Rainbow [258]2 years ago
8 0

Answer:

x²+6x+9=0

x²+3x+3x+9=0

x(x+3)+3(x+3)=0

(x+3)(x+3)=0

either

x+3=0

x=-3

or

x+3=0

x=-3

Step-by-step explanation:

next method

x²+6x+9=0

x²+2×x×3+3²=0

it is in formula of (x+y)²

(x+3)²=0

x+3=√0

x+3=0

x=-3

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( a+b )^2 = ...........................
stepladder [879]

Answer:

a^{2} + 2ab +b^{2}

5 0
3 years ago
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Martin Middle School sold two types of pies at the last bake sale — apple and blueberry. If 35/50 of the pies sold were apple, w
cestrela7 [59]

Answer:

30%

Step-by-step explanation:

30%

7 0
3 years ago
Help I need this answer before the day is over
iren2701 [21]
X=73 y=34

i think that is the answer
4 0
3 years ago
Please help due in 3 min
andrezito [222]

Answer:

(h*h)(10) is the same as h(10)*h(10). Let's find the value of h(10) first. To do this, replace every x with 10 like so

Step-by-step explanation:

h(x) = 6-x

h(10) = 6-10

h(10) = -4

So,

h(10)*h(10) = (-4)*(-4)

h(10)*h(10) = 16

The final answer is 16

3 0
3 years ago
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Write an equation of a line that passes through the points (1, 7) and (5, 19) . Give the final form in slope intercept form. (Pl
Alinara [238K]

Answer:

y = 3x + 4

Step-by-step explanation:

slope = (y2 -y1)/(x2 - x1)

y2 = 19

y1 = 7

x2 = 5

x1 = 1

Slope = (19 - 7)/(5 - 1)

slope = 12 / 4

slope = 3

So far what you have is

y = 3x + b                      To solve for b, use either of the two points.

x = 1

y = 7

7 = 3(1) + b

7 = 3 + b

b = 4

The final equation is

y = 3x + 4                    

We should check that with the other  point

x = 5                  Find y

y = 3(5) + 4

y = 15 + 4

y = 19              Ans it checks.

3 0
3 years ago
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