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german
3 years ago
9

Help plz and thank u

Mathematics
1 answer:
stealth61 [152]3 years ago
8 0

Answer:

Rate of Change is 2

Step-by-step explanation:

The y values are changing by 4

The x values are changing by 2

Rate of change = Change of y/Change of x

4/2=2

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420÷14 show picture please
Andru [333]
14/420
14*3=42
14*0=0
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Prove
30*14=420
5 0
3 years ago
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A rectangular window measures 54 inches by 24 inches. There is an a = 14-inch wiper blade attached by a b = 5-inch arm at the ce
nika2105 [10]
It the wiper blade (and arm) made a full rotation, 2 circles would be formed.

One small circle with radius b, and a larger circle with radius a+b.


The areas of these 2 circles are respectively:

\pi b^2=\pi\cdot 5^2=25 \pi (in^2)    and

\pi (a+b)^2=\pi (14+5)^2=361\pi (in^2)


120° is 1/3 of a complete angle 360° which form a circle, so the areas formed by the arm of length b, and the arm + the wiper blade (a+b) are:

\frac{25 \pi}{3} and \frac{361\pi}{3} in squared respectively.

the actual wiped area is \frac{361\pi}{3}-\frac{25 \pi}{3}= \frac{336\pi}{3}=112\pi \approx351.7 (in squared)


Area of the window is 54*24= 1296 (in squared)

thus, the ratio of the wiped area to the whole area of the window is 351.7/1296=0.271

Converted to percentages, this is 27.1%


Answer: 27.1%

3 0
3 years ago
The length (L) of a rectangle of fixed area varies inversely as the width (W).
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Answer:

6.25

Step-by-step explanation:

If 10ft=8ft

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Find tea. Write your answer in simplest radical form
o-na [289]

Answer:

2√6 ft

Step-by-step explanation:

Tan Ф = opposite/ adjacent

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$184

Step-by-step explanation:

87 is 5 less than 1/2 of the price without a sale. in that case 92 would be half the cost. To find the full value you would multiply 92 by two to get 184

3 0
3 years ago
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