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Sholpan [36]
3 years ago
13

Help!!!^^^^^^^^^^^^^^

Mathematics
2 answers:
zheka24 [161]3 years ago
3 0

Answer:

woaahhh

Step-by-step explanation:

oksian1 [2.3K]3 years ago
3 0

Answer:

WHYYY SHOULD II

Step-by-step explanation:

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Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.
barxatty [35]

Answer:

x=9,-1  and x^2+(-8)x=9

Explanation:

we have been given with the quadratic equation x^2-8x-9

we compare the given quadratic equation with general quadratic equation

general quadratic is ax^2+bx+c=0

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant D=b^{2}-4ac

D=(-8)^2-4(1)(-9)=100

Now, to find the value of x

Formula is x=\frac{-b\pm\sqrt{D}}{2a}

Now, substituting the values we will get

x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1

And rewritting the given equation by  shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

x^2+bx=c

4 0
3 years ago
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Brainliest and double the points!!! PLEASE HELP!!!
11111nata11111 [884]
Im not sure what that means but i can try...

Im not sure the order to put them in but the positive line is

y>1/2x-1

And the negative line is

Y<=3x+1

(I couldn’t find a less than and equal to sign)
4 0
3 years ago
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Please help I don’t understand
aksik [14]
Is this a multiple choice question? If so what are the options?
My guess is 21
7 0
3 years ago
What is x? Options: 81, 57, 143, 66.
jeyben [28]

Answer:

x = 103

Step-by-step explanation:

In my opinion, because x and 77 are the supplementary angles, so 180-77 = x or x+77=180. The answer should be 103......even though it's not in the options (I'm sorry).

3 0
3 years ago
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Area and Perimeter of a rectangle that is 92 meters long and 18 meters wide
tensa zangetsu [6.8K]

a= 92(18) =1656

Area= 1656m


p= 2(92+18) =220

Perimeter= 220m

5 0
3 years ago
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