3 years ago

Here is a math question I need help with, offering 20 points for full answer.

Mathematics

1 answer:

ira [324]3 years ago

7 0

Answer: 8 sqrt7

Step-by-step explanation:

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Multiply and simplify. <br><br> 2/3 * (1/3 + 3 1/4)=?

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Solve the equation using the quadratic formula : x^2-10x+25=18

Sever21 [200]

$x^2-10x+25=18 \\ \\x^2-10x+25-18 = 0\\ \\ x^2-10x+ 7 =0 \\ \\a=1 , b = -10 , c= 7 \\ \\ \Delta = b^{2}-4ac = (-10)^{2}-4*1*7=100-28 = 72 \\ \\\sqrt{\Delta }=\sqrt{72}= \sqrt{2*36} =\sqrt{36}*\sqrt{2} =6\sqrt{2}$

$x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{10- 6\sqrt{2}}{2}=\frac{2(5-3\sqrt{2})}{2}= 5-3\sqrt{2}\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{10+ 6\sqrt{2}}{2}=\frac{2(5+3\sqrt{2})}{2}= 5+3\sqrt{2}$

$Answer : \ x= 5-3\sqrt{2} \ \ or \ \ x = 5+3\sqrt{2}$

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3 years ago

Every 4 seconds, a ski lift chair rises 14 feet. Describe the relationship between the height of the chair and the time.

Svetradugi [14.3K]

Answer

Everything will increase.

Step-by-step explanation:

According to the question, the chair rises every 4 seconds 14 feet high. Therefore, the relationship between the chair and time is: the chair rises every 4 seconds.

Feel free to copy it I don't mind :)

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3 years ago

3x squared - 2 x y when x=2 and y = 5

ira [324]

the Answer is 4 do order of operations

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3 years ago

Need help po, needed today. Thanks!

Dimas [21]

Answer:

<h2>question is not up down this is incorrect questions</h2>

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2 years ago