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4 years ago

Need help with number 5 please

Mathematics

1 answer:

8_murik_8 [283]4 years ago

7 0

Well let's pretend that decimal wasn't there, and the question was just asking √81. You should know that the answer to √81 is 9. So now, let's put the decimal back in its place so the question is √.81 again. You just have to do the same thing to the answer by adding a decimal in front of it. Therefore:

√81 = 9

√.81 = .9

Your answer is 0.9 :)

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3 years ago

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Answer:

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horrorfan [7]

Given:

Given that Mrs. Galicia’s solution for the equation.

We need to determine whether Mrs. Galicia’s solution is correct or not.

Also, we need to determine the correct solutions.

Mrs. Galicia’s solution:

Step 4: $(x-4)^2=25$

Step 5: $x-4=25$

After step 4, Mrs. Galicia’s did not take square root on both sides to determine the value of x.

Thus, Mrs. Galicia’s made in mistake in step 5, by solving the equation without taking square root on both sides.

Hence, Mrs. Galicia’s solution is wrong.

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Solving, we get;

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$x^2-8x+16=9+16$

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Taking square root on both sides, we get;

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Thus, the values of x are given by

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Work

$\frac{5}{1}$ ÷ $\frac{1}{100}$

Keep the first fraction, change the sign, flip the second fraction.

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Answer

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Answer:

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Step-by-step explanation:

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