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3 years ago

Is -10-2x equal to 2x-10

Mathematics

1 answer:

saul85 [17]3 years ago

8 0

Answer:No

Step-by-step explanation:

-10-2x = -2(5+x)

2x-10 = 2(x-5)

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Step-by-step explanation:

A: 49+9 does not equal 441

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D: 36+16 does not equal 100

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Step-by-step explanation:

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Find the value of the variable and YZ if Y is between X and Z. XY=4n+3, YZ=2n-7,XZ=22

ruslelena [56]

Answer:

$\large \boxed{n = \dfrac{13}{3}; YZ = \dfrac{5}{3}}}$

Step-by-step explanation:

I think you have the situation shown in the diagram below.

1. Calculate the value of n

$\begin{array}{rcl}XY + YZ & = & XZ\\4n+ 3 + 2n - 7 & = & 22\\6n - 4 & = & 22\\6n & = & 26\\n & = & \dfrac{26}{6}\\\\& = & \mathbf{\dfrac{13}{3}}\\\end{array}\\\large \boxed{\mathbf{n = \dfrac{13}{3}}}$

2. Calculate the value of YZ

$\begin{array}{rcl}YZ & = & 2n - 7\\& = & 2\left (\dfrac{13}{3}\right ) - 7 \\\\& = & \dfrac{26}{3} - 7\\\\& = & \dfrac{26}{3} - \dfrac{21}{3}\\\\& = & \dfrac{5}{3} \\\\\end{array}\\\large \boxed{YZ = \mathbf{ \dfrac{5}{3}}}$

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3 years ago

What is the solution of the equation when solved over the complex numbers?

marishachu [46]

Try this option:

x²+27=0;

$(x+\sqrt{-27})(x- \sqrt{-27})=0; \ => \ \left[\begin{array}{ccc}x=3 \sqrt{3}i\\x=-3 \sqrt{3}i \end{array}\right$

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3 years ago

Read 2 more answers

“Genetic power is far more potent than atomic power. And it will be in everyone's hands. It will be in kits for backyard gardene

steposvetlana [31]

Even though this is not maths, let me help you. In order to answer the first question I suggest you to try to imagine what would happen if people had the power to genetically alter things. It might be helpful to think about how it would affect your life. In that case you would come up to the answer on what should I do with my genetic power.
Now for the second one, let me say that science cannot answer because results are not in the hands of the scientists, but in the hands of the people.
I hope this info can help

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3 years ago