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2 years ago

10% of 40 is _____. Explain your method.

Mathematics

2 answers:

KATRIN_1 [288]2 years ago

6 0

Answer:

Step-by-step explanation:

Make the 10% a decimal

.10

Then multiply it by 40

.10*40

You get 4

topjm [15]2 years ago

3 0

10% of 40 is 4 because 40 divided by 10 is 4

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Answer:

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Step-by-step explanation:

We are given the root of the equation

$x=1+\pm \sqrt{5}$

If we are given solution of the equation then find equation using formula.

If a and b are the solution of equation then equation would be (x-a)(x-b)=0

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Equation form would be $(x-1-\sqrt{5})(x-1+\sqrt{5})=0$

Now we simplify the above equation to get correct option.

$x^2-x+x\sqrt{5}-x+1-\sqrt{5}-x\sqrt{5}+\sqrt{5}-5=0$

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So, D is correct. $x^2-2x-4=0$

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