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musickatia [10]
3 years ago
15

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  

so

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
Read 2 more answers
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.

4 0
4 years ago
Read 2 more answers
Divide 405 in to the ratio 3:12<br> give answer in the form ... and ...
OLEGan [10]

Answer:

81:324

Step-by-step explanation:

3+12=15

405 div 15 =27

3 times 27 = 81

12 times 27 = 324

81:324

6 0
3 years ago
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nignag [31]
I don’t know I need help to
6 0
2 years ago
Evaluate the function below given f(2) f(x)=3x-10
borishaifa [10]

Answer:

f(2) = -4

Step-by-step explanation:

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

3(2)-10

6-10

-4

f(2) = -4

3 0
3 years ago
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