4 years ago

Can someone help me? someone explain to me how to do problems like x - 2/5 = 7

Mathematics

1 answer:

White raven [17]4 years ago

4 0

Step-by-step explanation:

the first question

x-2/5=7

you need to use the same rules as pemdas but sorta in reverse. starting with multiplying 7 by 5, which is 35

x-2= 35

then you would add 2 to 35

making the answer x=37

You'd follow the same steps for the second one.

let me know if you have any questions

I hope this helped

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Answer:

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Step-by-step explanation:

Hello,

First, of all, as x is positive we know that:

$(\sqrt{x})^2=|x|=x$

Let's simplify the expression:

$\sqrt{3x^4}\cdot \sqrt{5x^2}\cdot \sqrt{10}=\sqrt{3}\cdot x^2\cdot \sqrt{5}\cdot x\cdot \sqrt{2\cdot 5}=x^3\cdot \sqrt{3\cdot 5\cdot 5 \cdot 2}\\ \\=5x^3\sqrt{6}$

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Answer:

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Step-by-step explanation:

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<u>Step 1: Check if 2 is less than -12</u>

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