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Marysya12 [62]
3 years ago
9

A basketball player makes 80% of her free throws. The random numbers below represent 20 trials for

Mathematics
1 answer:
Taya2010 [7]3 years ago
8 0

Answer:

0.6

Step-by-step explanation:

  • The numbers 0 to 7 represent a made free throw
  • The numbers 8 to 9 represent a missed  free throw.

Given the simulation data

(8,2) (9,3) (4,0) (5,8) (2,7) (2,0) (5,4) (8,0) (0,4) (9.1)

(9,6) (6,5) (4,4) (1,7) (0,4) (8,5) (8,8) (1,7) (3,5) (0,3)

  • A pair that contains only numbers between 0 and 7 shows the player makes both throws.

These pairs are:

(4,0)  (2,7) (2,0) (5,4)  (0,4) (6,5) (4,4) (1,7) (0,4) (1,7) (3,5) (0,3)

There are a total of 12 cases where the player makes both throws.

Therefore:

P(Player makes both throws)=12/20=0.6

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-a^2+46a-480=0<br> a - ?
sattari [20]
a = 30
a = 16

-a² + 46a -480 = 0

(-a + 30) (a -16) = 0
(-a)(a) + (-a)(-16) + 30(a) + 30(-16) = 0
-a² + 16a + 30a -480 = 0
-a² + 46a - 480 = 0

(-a + 30) = 0   ; (a - 16) = 0
-a = -30          ;   a = 16
 a = 30

To check:
a = 30
-(30)² + 46(30) - 480 = 0
-900 + 1380 - 480 = 0
480 - 480 = 0
0 = 0

a = 16
-(16)² + 46(16) - 480 = 0
-256 + 736 - 480 = 0
480 - 480 = 0
0 = 0
5 0
3 years ago
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Kassie is measuring two line segments. the first line segment is 35 centimetres long. the second line segment is 450 milimetres
Free_Kalibri [48]
1cm = 10mm
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the 2nd line segment is 450mm = 45cm
6 0
3 years ago
A bicycle tire has a diameter of 62 cm
anzhelika [568]

Answer

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Step-by-step explanation:

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Sin³xcosx+sinxcos³x=sinxcosx
Svetllana [295]

Answer:

Step-by-step explanation:

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