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8090 [49]
3 years ago
7

Shania is making a scale diagram of the badminton court at the community center. She uses a scale of 1 centimeter to 0.5 meter t

o draw the scale diagram. If the scale length of the badminton court is 26.8 centimeters and the scale width is 12.2 centimeters, what is the actual area of the court?
Mathematics
2 answers:
Ede4ka [16]3 years ago
8 0
Multiply 26.8 times 12.2 equals 326.96 (sry if im wrong hope this helps :D)
myrzilka [38]3 years ago
8 0

Answer: Its 81.74 meters.


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Multiplying both sides of an equation by the same number keeps the equation true. In this example, both sides are multiplied by 3, so the equation isn't changed.
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A radio arm saw has a circular cutting blade with a diameter of 10 inches and it spins at 2000rpm if there are 12 cutting teeth
FinnZ [79.3K]

Answer:

12565.11 teeth approximately cut cross the cutting surface per seconds.

Step-by-step explanation:

Since the diameter is 10inches, the circumference of the arm saw is 10π (circumference is πd where d is diameter).

The number of teeth on the cutting blade can be gotten by multiplying the diameter by 12 since we have 12 teeth per inch on the arm saw

Number of teeth on saw = 12 x 10π = 120π.

To get the number of teeth that cross the cutting surface in 2000rpm we multiple it by the total number of teeth in just one rpm.

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33.33 x 120π ≈ 12565.11 teeth

7 0
3 years ago
Find ​(a) the slope of the curve at the given point​ p, and ​(b) an equation of the tangent line at p. y=−2−9x2​; ​p(2​,−38​)
Neporo4naja [7]

Answer:

a) -36

b) y = -36x +34

Step-by-step explanation:

a) The slope is found using the derivative of the function.

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  f'(2) = -18·2 = -36

___

b) The point-slope form of the equation can be written as ...

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You plan to accumulate 100,000 at the end of 42 years by making the follow-
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Answer:

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At the end of year 14, the balance from the deposits of X can be found using the annuity due formula:

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where P is the periodic payment, n is the number of payments and compoundings per year, t is the number of years, and r is the annual interest rate.

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This accumulated amount continues to earn interest for the next 28 years, so will further be multiplied by 1.07^28. Then the final balance due to deposits of X will be ...

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__

The same annuity due formula can be used for the deposits of Y for the last 10 years of the interval:

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__

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From the latter, we have ...

  X = Y +100

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Y is 479.17

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3 years ago
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The same constant value(s)
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