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lozanna [386]
4 years ago
15

1 / 2x squared minus x minus 12​

Mathematics
1 answer:
Paladinen [302]4 years ago
6 0

Answer:

-11.75  - x

Step-by-step explanation:

0.5 squared = 0.25

0.25-12= -11.75

-11.75 - x

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Would like this problem broken down step by step thanks!
antiseptic1488 [7]

Answer:

m=12

Explanation:

Given any quadratic function, y=ax²+bx+c.

We can determine the nature of the roots of such quadratic function by examining the discriminant, D where:

D=b^2-4ac

• If D>0, the roots are real and unequal.

,

• If D=0, the roots are real and equal.

,

• If D<0, the roots are complex.

In our given equation:

\begin{gathered} y=18x^2+mx+2 \\ a=18,b=m,c=2 \end{gathered}

For the function to have exactly one zero, the value of D=0.

\begin{gathered} D=b^2-4ac=m^2-4(18)(2)=m^2-144 \\ D=0\implies m^2-144=0 \\ Add\text{ 144 to both sides.} \\ m^2=144 \\ Take\text{ the square root of both sides} \\ \sqrt{m^2}=\sqrt{144} \\ m=12 \end{gathered}

The value of m for which the function will have one zero is 12.

4 0
1 year ago
In a survey of 300 middle school students, 15% said they play sports after school. How many
blsea [12.9K]

Answer:

45

Step-by-step explanation:

15% of 100 = 15

15 x 3 = 45

5 0
3 years ago
The percentage difference from 239,900 to 251,895
Katarina [22]

Answer:

4.87805%

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=2%28%20%7Bx%7D%5E%7B2%7D%20-%202x%29%20%3D%205" id="TexFormula1" title="2( {x}^{2} - 2x) = 5"
Shtirlitz [24]

Answer:

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Step-by-step explanation:

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4 years ago
The sum of five times a number and ten is twenty-five. Find the number.
kotegsom [21]

Answer:

Question: The sum of 10 and 5 times a number is 25. Find the number.

Answer: x = 3

Step-by-step explanation:

10 + 5x = 25

5x = 25 - 10

5x = 15

x = 3

5 0
3 years ago
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