3 years ago

Please Help Thank You I will reward brainliest

Mathematics

1 answer:

docker41 [41]3 years ago

7 0

1011 because all you have to do is multiply the 1.5 by the scale factor to get your answer.

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What are the zeros of the quadratic function f(x) = 2x2 + 8x – 3? x = –2 – StartRoot StartFraction 11 Over 2 EndFraction EndRoot

Phantasy [73]

Answer:

The zeros are

$x=-2+\frac{\sqrt{22}}{2}$

$x=-2-\frac{\sqrt{22}}{2}$

Step-by-step explanation:

we have

$f(x)=2x^{2}+8x-3$

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

Equate the function to zero

$2x^{2} +8x-3=0$

$a=2\\b=8\\c=-3$

substitute in the formula

$x=\frac{-8\pm\sqrt{8^{2}-4(2)(-3)}} {2(2)}$

$x=\frac{-8\pm\sqrt{88}} {4}$

$x=\frac{-8\pm2\sqrt{22}} {4}$

$x=-2\pm\frac{\sqrt{22}}{2}$

therefore

$x=-2+\frac{\sqrt{22}}{2}$

$x=-2-\frac{\sqrt{22}}{2}$

4 0

4 years ago

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What is the value of b?<br><br> - 7.5 ( x - 3 ) = 3.75

Dominik [7]

Answer: 22.5

Step-by-step explanation: The y-intercept or b would be 22.5 because In point slope form 3.75 is the y, -7.5x is the mx and since -7.5x-3=22.5, 22.5 is the b.

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4 years ago

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Divide 405 in to the ratio 3:12<br> give answer in the form ... and ...

OLEGan [10]

Answer:

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Step-by-step explanation:

3+12=15

405 div 15 =27

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I don’t know I need help to

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borishaifa [10]

Answer:

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for f(2), plug it into f(x)=3x-10

3(2)-10

6-10

-4

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3 years ago