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2 years ago

Explain why it is importantto follow the order ofoperations whenevaluating 15 + 3 X 4.

Mathematics

2 answers:

Romashka [77]2 years ago

6 0

Answer:

Because there are many different answers depending on how you answer.

well, only two for this question: 27 (for following pemdas) and 72 for following it in order

mr_godi [17]2 years ago

4 0

If you don’t use the order of operations, you will get 72 rather than the actual answer of 27.

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Consider the radical equation (3√6-x)+4=-8. Explain why the calculation in Problem 1 does not produce a solution to the equation

murzikaleks [220]

Answer:

See explanation below

Step-by-step explanation:

<u>First we will solve the radical equation</u> (which I guess was problem 1),

Let's start by simplifying it:

$3\sqrt{6-x}+4=-8\\ 3\sqrt{6-x}=-8-4\\ 3\sqrt{6-x}=-12\\\sqrt{6-x}=-4$

Now we will solve the equation by squaring both sides of the equation:

$\sqrt{6-x} =-4\\6-x=-4^{2} \\6-x=16\\-x=16-6\\-x=10\\x=-10$

So the calculation for x was that x = -10

However, this does not produce a solution to the equation: When we plug this value into the radical equation we get:

$3\sqrt{6-x} +4= -8\\3\sqrt{6-(-10)} +4=-8\\3\sqrt{16}+4 = -8\\ 3(4)+4 = -8\\12 + 4 = -8$

This happens because <u>when we first squared both sides of the equation in the first part of the problem we missed one value for x </u>(remember that all roots have 2 answers, a positive one and a negative one) while squares are always positive.

When we squared the root, we missed one value for x and that is why the calculation does not produce a solution to the equation.

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10 weeks=15 so that’s the length of the sunflower

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Explain why it is importantto follow the order ofoperations whenevaluating 15 + 3 X 4.​

Explain why it is importantto follow the order ofoperations whenevaluating 15 + 3 X 4.