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3 years ago

A pole 9 feet tall is used to support a guy wire for a tower, which runs from the tower

Mathematics

2 answers:

katovenus [111]3 years ago

8 0

Answer: 42ft

Yeh its 42ft I worte something ealier but it was wrong 42ft is right

STALIN [3.7K]3 years ago

7 0

Answer:

42 feet

Step-by-step explanation:

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In-s [12.5K]

The width of a book is 1.5 inches.

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2 years ago

What is the correct order of operations for simplifying the expression (x+3)^2-(x^2+9)/2x^2?

kramer

Answer:

The given expression is simplified as $\frac{(x+3)^2-(x^2 +9)} {2x^2} = \frac{3}{x}$

Step-by-step explanation:

Here, the given expression is:

$\frac{(x+3)^2-(x^2 +9)} {2x^2}$

Now, with ALGEBRAIC IDENTITIES:

$(a+b)^2 = a^2 + b^2 + 2ab$

Now, similarly: $(x+3)^2 = x^2 + (3)^2 + 2x(3) = (x^2 + 9 + 6x)$

Now, substituting the values in the given expression, we get:

$\frac{(x+3)^2-(x^2 +9)} {2x^2} \implies \frac{(x^2 + 9 + 6x)-(x^2 +9)} {2x^2}\\= \frac{(x^2 + 9 + 6x-x^2 -9)} {2x^2} \\= \frac{ 6x} {2x^2} = \frac{3}{x}$

Hence, the given expression $\frac{(x+3)^2-(x^2 +9)} {2x^2} = \frac{3}{x}$

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Answer

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--------

Step-by-step explanation:

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