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Papessa [141]
4 years ago
15

A meteor crater is 3900 feet in diameter. Approximate the distance around the crater. Use 3.14 for π.

Mathematics
1 answer:
Natali [406]4 years ago
5 0
You’re looking for the *circumference* of the crater. The definition of π is the ratio of the circumference of the circle to its diameter, or mathematically:

π = c/d

Which means that c = dπ. Our diameter is 3900 ft, which mean that our circumference is 3900π ft, or, using 3.14 as π, 3900(3.14) = 12,246 ft.
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TWO DVDs and one videocassette tape cost $72. One DVD and two videocassette tapes
BaLLatris [955]

Answer:

dvd cost 36 dollars

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5 0
2 years ago
The next Mindel car will cost 12.6% less than the current model. The current model cost 31,000. How much will the price decrease
Zigmanuir [339]

Answer:

3906 dollars will be the decrease

the next model will cost 27094 dollars

Step-by-step explanation:

12.6%÷100×3=3906

31000-3906=27094

5 0
3 years ago
In a math competition, every question that is answered correctly gets a score of 4. Wrong gets a score of -2. and not answered g
11111nata11111 [884]

Answer:

Step-by-step explanation:

First we need to find the score of the incorrect answers and the questions that were not answered.

Score for the incorrect answers = 4*(-2) = -8

Score for the questions not answered = 6*(-1) = -6

Score for the questions answered correctly = 106 - [ (-8) + (-6) ]

                                                                       = 106 -[-14]

                                                                        = 106 + 14

                                                                        = 120

Number of questions answered correctly = total score for questions that were answered correctly ÷ score of 1 correct answer

= 120 ÷ 4

= 30

30 questions were answered correctly.

7 0
2 years ago
-2.4f + 0.4f-16-8=<br> help me please
omeli [17]
The answer is -2f -24.
All you gotta do is is combine like terms.
Explanation:
-2.4f + 0.4f = -2f
-16 -8 = -24
5 0
3 years ago
PLS HELP <br> what would be the equation for this one?
____ [38]

Answer:

x^2 + y^2 = 25

Step-by-step explanation:

The standard form of a circle equation is:

(x - h)^2 + (y - k)^2 = r^2

where (h, k) is the center and r is the radius.

We can see that the center is (0, 0) by looking at the graph, and the radius is 5 because it is marked. Plugging these in we get:

x^2 + y^2 = 25

6 0
3 years ago
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