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1 year ago

I need help trying to understand how they solved this equation. Just a little confused.

Mathematics

1 answer:

Misha Larkins [42]1 year ago

3 0

Answer:

0.495

Explanation:

Given the expression:

$0.55-1.645\sqrt[]{\frac{0.55(1-0.55)}{220}}$

Begin by simplifying the expression under the radical (square root) sign.

$\begin{gathered} =0.55-1.645\sqrt[]{\frac{0.55(0.45)}{220}} \\ =0.55-1.645\sqrt[]{\frac{0.2475}{220}} \end{gathered}$

Using a calculator, we evaluate the radical:

$\begin{gathered} =0.55-1.645\sqrt[]{0.001125} \\ =0.494825 \\ \approx0.495\text{ (to 3 decimal places)} \end{gathered}$

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Answer:

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Step-by-step explanation:

Let's solve your inequality step-by-step.

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3 years ago

The sum of two numbers is 82. The difference of the two numbers is 62. What are the two numbers?

Alja [10]

Answer

Step-by-step explanation:

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3 years ago

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The preparation of the Sales section of the income statement for Blue Spruce Corp. is as follows:

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Learn more about the sales section of the income statement at brainly.com/question/24498019

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3 years ago

Can someone help with this questions please

MrRissso [65]

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This question can't be answered. It is necessary to get the dimensions of the figure.

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Q11.

Let's find a conclusion having statements step by step.

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3 years ago

What is the answer to this question??

MAXImum [283]

Answer:

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Step-by-step explanation:

hihi. So you can use the Pythagorean theorem to find any missing sides to a triangle. The equation goes like this: a^2 + b^2 = c^2, where a a and b are the lengths of the 2 bases of the triangle and c is the length of the hypothenuse/longest side to the triangle. Since you know the length of the hypothenuse and of one of the bases you can solve for the last base using the equation which gets you ~8.246. Now, adding that to the other side lengths gets you 28.246 as an approximate perimeter to 3 sig figs

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3 years ago