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3 years ago

#4 please help Very confused on how to do this

Mathematics

1 answer:

Maslowich3 years ago

4 0

Answer:

a) 34/40

c) 16/40

Step-by-step explanation:

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What is a common factor of 14, 6, 9

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4 years ago

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A man flies a kite at a height of 16 ft. The wind is carrying the kite horizontally from the man at a rate of 5 ft./s. How fast

Talja [164]

Answer:

4.41 feet per second.

Step-by-step explanation:

Please find the attachment.

We have been given that a man flies a kite at a height of 16 ft. The wind is carrying the kite horizontally from the man at a rate of 5 ft./s. We are asked to find how fast must he let out the string when the kite is flying on 34 ft. of string.

We will use Pythagoras theorem to solve for the length of side x as:

$x^2+16^2=34^2$

$x^2=34^2-16^2$

$x^2=900\\\\x=30$

Now, we will use Pythagorean theorem to relate x and y because we know that the vertical side (16) is always constant.

$x^2+16^2=y^2$

Let us find derivative of our equation with respect to time (t) using power rule and chain rule as:

$2x\cdot \frac{dx}{dt}+0=2y\cdot \frac{dy}{dt}$

We have been given that $\frac{dx}{dt}=5$ , $y=34$ and $x=30$ .

$2(30)\cdot 5=2(34)\cdot \frac{dy}{dt}$

$300=68\cdot \frac{dy}{dt}$

$\frac{dy}{dt}=\frac{300}{68}$

$\frac{dy}{dt}=4.4117647058823529$

$\frac{dy}{dt}\approx 4.41$

Therefore, the man must let out the string at a rate of 4.41 feet per second.

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4 years ago

Timmy and Sarah head out to dinner and Garfinkels in Vaile. Timmy brings $40 with him. If buy two French Dips costing $10.95 a p

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Answer:

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Step-by-step explanation: :)

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3 years ago

<img src="https://tex.z-dn.net/?f=3a%20-%202%20-%20b%20-%20a" id="TexFormula1" title="3a - 2 - b - a" alt="3a - 2 - b - a" align

Stells [14]

Answer:

2a -b -2

Step-by-step explanation:

3a -2 - b- a

Combine like terms

3a -a -b -2

2a -b -2

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4 years ago

Heyyyy I really need help with dis. If u can please answer and explain

Arisa [49]

Answer:

This should help

Step-by-step explanation:

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