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joja [24]
3 years ago
14

PLEASE HELP ASAP

Mathematics
2 answers:
borishaifa [10]3 years ago
8 0
1.) True
2.) a car traveling at the same speed next to you
3.) not sure but maybe second
4.) a flying bird
jarptica [38.1K]3 years ago
5 0

1. true

2. a billboard on the side of the road

3. meter

4. a person sitting next to you

(p.s. just took this test, got a 100%)

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How do you graph y=3x-2
aleksandr82 [10.1K]

Answer:

The graph should look almost exactly like this. I used a virtual graphing chart to assist, since it is capable of showing more than paper alone.

4 0
2 years ago
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Solve the system of equations 2x+4y+3z=6 5x+8y+6z=4
MaRussiya [10]

Answer:Solution :

{x,y,z} = {-8,52/7,-18/7}  

 

System of Linear Equations entered :

  [1]    2x + 4y + 3z = 6

  [2]    5x + 8y + 6z = 4

  [3]    4x + 5y + 2z = 0

Solve by Substitution :

// Solve equation [3] for the variable  z  

 

 [3]    2z = -4x - 5y  

 [3]    z = -2x - 5y/2  

// Plug this in for variable  z  in equation [1]

  [1]    2x + 4y + 3•(-2x-5y/2) = 6

  [1]    -4x - 7y/2 = 6

  [1]    -8x - 7y = 12

// Plug this in for variable  z  in equation [2]

  [2]    5x + 8y + 6•(-2x-5y/2) = 4

  [2]    -7x - 7y = 4

// Solve equation [2] for the variable  y  

 

 [2]    7y = -7x - 4

 [2]    y = -x - 4/7

// Plug this in for variable  y  in equation [1]

  [1]    -8x - 7•(-x -4/7) = 12

  [1]    -x = 8

// Solve equation [1] for the variable  x  

  [1]    x = - 8  

// By now we know this much :

   x = -8

   y = -x-4/7

   z = -2x-5y/2

// Use the  x  value to solve for  y  

   y = -(-8)-4/7 = 52/7  

// Use the  x  and  y  values to solve for  z  

 z = -2(-8)-(5/2)(52/7) = -18/7  

Solution :

{x,y,z} = {-8,52/7,-18/7}  

Step-by-step explanation:

4 0
3 years ago
Martin's neighbors pay him $8 per week to walk their dog. He saves his money for 5 weeks. Martin buys a new bike helmet for $37.
KIM [24]

Answer:

$3

Step-by-step explanation:

Martin get's $8 EVERY WEEK

So, in 5 weeks, he will get:

8 * 5 = $40

He saves up all the 5 weeks, so he has all the money.

After 5 weeks, he has:

$40

Now, he decides to buy a helmet for $37. So the amount remaining is:

40 - 37 = $3

So, Martin has $3 currently

5 0
3 years ago
Read 2 more answers
Solve for x. Leave your answer in simplest radical form.
ziro4ka [17]
X^2 = 5^2 + 10^2
x^2 = 25 + 100
x^2 = 125

5 0
3 years ago
A bag of marbles contains 2 gold marbles, 10 silver marbles, and 30 black marbles. You decide to play the following game: Random
Rasek [7]

Answer:

-71 cents

Step-by-step explanation:

The total number of balls is 2 + 10 + 30 = 42 balls

The probability of getting gold marbleP_g = 2/42 = 0.04762

The probability of getting silver marbleP_s = 10/42 = 0.2381

The probability of getting black marbleP_b = 30/42 = 0.7143

With the price for each case, we can calculate the expected value of the game by multiplying the price money by the probability and sum them up

E = 5P_g + 2P_s - 2P_b

E = 5*0.04762 + 2*0.2381 - 2*0.7143 = -0.714 dollar

or -71 cents.

So expect to lose 71 cents everytime you play this game

5 0
3 years ago
Read 2 more answers
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