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12345 [234]
3 years ago
14

Solve the linear system -x+2y=3 and 2x+y=4 by graphing

Mathematics
1 answer:
Scrat [10]3 years ago
4 0

Answer:

  (x, y) = (1, 2)

Step-by-step explanation:

Given the features of graphing calculators these days, obtaining a solution by graphing is one of my favorite methods. The attached graph shows the solution to be (x, y) = (1, 2).

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Help!!!!!!!!!!?.........
raketka [301]

Answer:

I think E.

Step-by-step explanation:

5 0
3 years ago
7. In a state lottery, a player must choose 8 of the numbers from 1 to 40. The lottery commission then performs an experiment th
Vlad1618 [11]

Answer:a) P(8 of the players numbers are drawn)=1.3×10^-8

b) P(7 of the players number are drrawn)=3.33×10^-c) P(at least 6 of the players number were drawn)=1.84×10^-4

Step-by-step explanation:

Players has 8 combinations of numbers from 1-40. The outcome S contains all the combinations of 8 out of 40

a) P(8 of the players numbers are drawn)= 1/40/8= 1.3×10^-8

There are one in hundred million chances that the draw numbers are precisely the chosen ones.

b) Number of ways of drawing 78 selected numbers from 1-40=8×(40-7)

8×32

P(7 of the players number are drawn)=8×32/40 =3.33×10^-6.

There are approximately 300,000 chances that 7 of the players numbers are chosen

c) P(at least 6 players numbers are drawn)= 32/2×(8/6) ways to draw.

P(at least 6 players numbers are drawn)=P(all 8 chosen are drawn)+P(7 players numbers drawn)+P(6 chosen are drawn) = 1+ 8 x32/40/8 +[8\6 ×32/2]

P(at least 6 players numbers are drawn) = 1.84×10^-4.

There are approximately 5400chances that at least6 of the numbers drawn are chosen by the player.

5 0
3 years ago
Make b the subject<br>a=4b+2/3-b​
Rasek [7]

Answer:

b = \frac{3a-2}{9}

Step-by-step explanation:

Given

a = 4b + \frac{2}{3} - b, that is

a = 3b + \frac{2}{3}

Multiply through by 3 to clear the fraction

3a = 9b + 2 ( subtract 2 from both sides )

3a - 2 = 9b ( divide both sides by 9 )

\frac{3a-2}{9} = b

6 0
3 years ago
PLS HELP (IN CLASS)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WHAT IS THE ANGLE OF C
borishaifa [10]

Answer:

50 :D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Help please !!
never [62]
I believe its moderate
7 0
3 years ago
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