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3 years ago

How do we check the solution for the equation 2x+3y=6

Mathematics

1 answer:

Nesterboy [21]3 years ago

8 0

Answer:

By substituting x and y vars with that in (x, y)

Step-by-step explanation:

2 * (-3) + 3 * 4 = 6 solution

2 * 0 + 3 * (-2) = -6 not solution

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What's geometric mean?

Black_prince [1.1K]

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3 years ago

Read 2 more answers

Product codes of 2, 3, 4, 5, or 6 letters are equally likely. What is the mean and variance of the number of letters in the code

ss7ja [257]

Answer:

$Mean = 4$

$Var = \frac{25}{12}$

Step-by-step explanation:

Given

Codes: 2,3,4,5,6

Required

Determine the Mean and Variance

Equally likely implies that the data follows a uniform distribution.

So,

$Mean = \frac{a+b}{2}$

Where

$a = Lower\ Bound = 2$

$b = Upper\ Bound = 6$

$Mean = \frac{a+b}{2}$

$Mean = \frac{2 + 6}{2}$

$Mean = \frac{8}{2}$

$Mean = 4$

Variance of a uniform distribution is calculated as thus;

$Var = \frac{(b-a+1)^2}{12}$

Substitute values for a and b

$Var = \frac{(6-2+1)^2}{12}$

$Var = \frac{5^2}{12}$

$Var = \frac{25}{12}$

7 0

3 years ago

(4+2)+8=14 choose an equivalent addition sentence that shows the associative of addition

Sauron [17]

Answer:

14 = 14

Step-by-step explanation:

(4 + 2) + 8 = 14

6 + 8 = 14

14 = 14

4 0

3 years ago

If the endpoints of line segment MN have coordinates of M(2,7) and M (-3, 1),the the length of line segment MN is closest to

stealth61 [152]

-1 over 6 that should be your answer

6 0

4 years ago

Which ordered pairs in the form (x,y) are solutions to the equation 4x-5y=24? Select each correct answer.

Igoryamba

Answer:

The correct answers are A, C and D.

Step-by-step explanation:

Given the equation 4x - 5y = 24, we substitute the coordinates of the given points to determine whether the equation is then true or not true.

For example, if we focus on point B: (6, 0), x = 6 and y = 0 and the equation becomes 4(6) - 5(0) = 24, which is TRUE.

Doing the same thing with A: (-9, -12), we get 4(-9) - 5(-12) = 24, which is also TRUE.

Check out C: (4, 8): 4(4) - 5(8) = 24. This is FALSE.

Check out D: (1, -4): 4(1) - 5(-4) = 24. This is TRUE.

The correct answers are A, C and D.

3 0

3 years ago