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leva [86]
3 years ago
6

Im confused and i need help please help

Mathematics
1 answer:
denis23 [38]3 years ago
8 0

Answer:

C

Step-by-step explanation:

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Question 14
Reil [10]

Answer:

The system of equations has a one unique solution

Step-by-step explanation:

To quickly determine the number of solutions of a linear system of equations, we need to express each of the equations in slope-intercept form, so we can compare their slopes, and decide:

1) if they intersect at a unique point (when the slopes are different) thus giving a one solution, or

2) if the slopes have the exact  same value giving parallel lines (with no intersections, and the y-intercept is different so there is no solution), or

3) if there is an infinite number of solutions (both lines are exactly the same, that is same slope and same y-intercept)

So we write them in slope -intercept form:

First equation:

6x+y=-1\\y=-6x-1

second equation:

-6x-4y=4\\-6x=4y+4\\-6x-4=4y\\y=-\frac{3}{2} x-1

So we see that their slopes are different (for the first one slope = -6, and for the second one slope= -3/2) and then the lines must intercept in a one unique point. Therefore the system of equations has a one unique solution.

6 0
3 years ago
Hey! i’ll give brainliest please help!
Bogdan [553]

Answer:

Building of an army

Step-by-step explanation:

6 0
3 years ago
A stone fell from the top of a cliff into the ocean.
Mice21 [21]

Answer:

It was in the watwr for 6 seconds and out for 6 seconds

Step-by-step explanation:

4 0
3 years ago
AB = 2x – 17, AC = 14, and BC = x + 1.<br> Find x.
Volgvan

9514 1404 393

Answer:

  • x = 10
  • AB = 3
  • BC = 11

Step-by-step explanation:

If B lies between A and C on a line segment, then ...

  AB +BC = AC

  (2x -17) +(x +1) = 14

  3x = 30 . . . . . . . . . . . . . add 16, collect terms

  x = 10 . . . . . . . . . . . divide by 3

  AB = 2(10)-17 = 3

 BC = 10+1 = 11

3 0
3 years ago
How many toothpicks will be required to make the fith row ?
hammer [34]

Answer:

6

Step-by-step explanation:

I am thinking it is 6 because you can just look at b and it looks the same

so I think it would be the same answer

6 0
3 years ago
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