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marysya [2.9K]
3 years ago
8

Please help me with this homework

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
6 0

Answer:

5 m

Step-by-step explanation:

(C is the hypotenuse)

A^2 + B^2 = C^2

4^2 + 3^2 = C^2

16 + 9 = C^2

25 = C^2 (Now square root both sides)

C = 5 m

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Cindy's age, x, is 3 times her age 6 years ago.
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The algebraic expression for the statement Cindy's age, x, is 3 times her age 6 years ago is 3(x-6).

The given statement is Cindy's age, x, is 3 times her age 6 years ago.

We need to represent the given statement as the algebraic expression.

<h3>What is an algebraic expression?</h3>

In mathematics, an algebraic expression is an expression built up from integer constants, variables, and algebraic operations.

6 years ago Cindy's age(x) is x-6.

3 times Cindy's age=3(x-6)

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Andre45 [30]

Answer:

\sf \boxed{\bf y =5\sqrt{22}}

Step-by-step explanation:

<h3>45° - 45° - 90° triangle:</h3>

       The ratio of sides of 45 - 45 - 90 triangle is  a : a : a√2.

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The side opposite to 90° is a√2.

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A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at
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Complete question

A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at 7 meters per minute. At a certain instant, the bottom of the ladder is 21 meters from the wall.

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Answer:

\frac{dx}{dt}=11.94m/min

Step-by-step explanation:

From the question we are told that

Slant height z=29m

Change in Vertical height  \triangle y=7m/s

Horizontal length x=21

Generally in finding the distance form the  top to the bottom of the wall it is mathematically given by

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Generally solving for the differential equation is mathematically represented as

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