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blondinia [14]
3 years ago
8

NEED HELP ASAP! I'll mark brainliest as well. Line l has the equation y=3x–4. Write the equation of the image of I after a dilat

ion with a scale factor of 2, centered at the origin. Write your answer in slope-intercept form.
y =
Mathematics
1 answer:
faust18 [17]3 years ago
8 0

Answer:

y=3x-8

Step-by-step explanation:

All you do is multiply the y-intercept which is -4 with the dilation of 2 which means multiply it by 2.

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Which expression is equivalent to 6X equals 10 X +20
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I think it’s 2(5x +10)
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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}

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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

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4 0
3 years ago
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beks73 [17]

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Step-by-step explanation:

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99 = x^2 - 1

99 + 1  =x^2

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The correct option is d, input equals 10.

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The bacteria is always doubled because in the sequence we multiply the number by 2

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