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Mathematics

1 answer:

sergiy2304 [10]2 years ago

4 0

On average, the age of a student is about 0.67 year(s) away from 13.3 year(s).
If the MAD for another club was 1.5 years, then that club's ages would be more variable than the ages for this club. (I think it should be like this.)

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Solve for r and t:<br> 6r - 3t = 6<br> 6r + 8t = -16

MAVERICK [17]

Multiply the first equation with (-1)
you should get this

-6r + 3t = -6
6r + 8t = -16

start to eliminate

11t = -22

divide by 11

t = -2

substitute

6r - 3(-2) = 6
6r + 6 = 6
6r = 6 - 6
6r = 0
r=0

8 0

2 years ago

elimination was used to solve a system of equations. one of the intermediate steps led to the equation 2x= 8. which of the follo

konstantin123 [22]

9514 1404 393

Answer:

Step-by-step explanation:

The step shown indicates that y was eliminated from the equations. For choices A, B, D, this is done by adding the equations together (the y-coefficients are opposites). The result of doing that gives x-terms of 4x, 0x, and 0x, respectively. These x-terms do not match the one given: 2x.

For choice C, the y-term is eliminated by subtracting twice the second equation from the first. Doing that gives ...

(4x +2y) -2(x +y) = (14) -2(3)

4x +2y -2x -2y = 14 -6 . . . . eliminate parentheses

2x = 8 . . . . . . . . . . . . . . collect terms

8 0

3 years ago

-3x minus 2 minus -6x = -4 minus -4x plus 12

DochEvi [55]

-3x-2-6x=-4-<em>(-4x)</em>+12

-9x-2=-16x+12

7x=14

x=2.

You probably got confused with the italicized part.

6 0

2 years ago

Write an expression for the perimeter of the triangle shown in the picture

umka2103 [35]

Answer: x-5+5+5

Step-by-step explanation:

3 0

2 years ago

For which angles 0, is sin (0) negative? Select all that apply

musickatia [10]

Answer:

In the 3rd and 4th quadrants of the coordinate system

ie π < θ < 2π. At π and 2π the sine values are zero

Step-by-step explanation:

6 0

1 year ago