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andrew-mc [135]
3 years ago
5

Help please! (Explanations are preferred, since I have to know how to do this for a test)

Mathematics
1 answer:
Galina-37 [17]3 years ago
3 0
Which one do you need help with 


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A DVD has a diameter of 34 centimeters. What is the area of the DVD? Round your answer to the nearest
nata0808 [166]

Answer:

907.46cm

Step-by-step explanation:

Area of Cirlce = πr^2

R= 17

R^2= 289

289 x 3.14 = 907.46

907.46cm

3 0
2 years ago
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53-224-9-2-2<br> What is the Degree of the polynomial
Bogdan [553]

It's not clear what polynomial you posted, but let's say you had the polynomial

5x^3+7x^2-9x+10

This is a cubic polynomial as the largest exponent is 3. The degree is also 3. The degree of the polynomial is equal to the largest exponent.

4 0
3 years ago
jane spent $15.75 to purchase cookies and brownies for 25 of her classmates. Cookies cost $0.50 and brownies cost $0.75. How man
AlladinOne [14]

im not sure

Step-by-step explanation:s


7 0
2 years ago
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F(x)=2+3cosπ10(x−3)Find f(47).
Illusion [34]
  f(x) = 2 + 3cos(10π(x - 3))
f(47) = 2 + 3cos(10(3.14)(47 - 3))
f(47) = 2 + 3cos(31.4(45))
f(47) = 2 + 3cos(1413)
f(47) = 2 + 3(0.891006524)
f(47) = 2 + 2.673019573
f(47) = 4.673019573
7 0
3 years ago
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Challenge The price of Stock A at 9 A.M. was $14.63. Since then, the price has been increasing at the
lozanna [386]

9514 1404 393

Answer:

  2.5 hours

Step-by-step explanation:

The price of stock A is described by ...

  A = 14.63 + 0.09t . . . . . . where t is time in hours after 9 A.M.

And the price of stock B is ...

  B = 15.13 - 0.11t

The two prices will be equal when ...

  A = B

  14.63 +0.09t = 15.13 -0.11t

  0.20t = 0.50 . . . . . . . . . . . . . add 0.11t -14.63 to both sides

  t = 0.50/0.20 = 2.5

The prices of the two stocks will be the same in about 2.5 hours.

8 0
2 years ago
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