Which set of coordinates satisfies the equations 3x − 2y = 15 and 4x − y = 20? (2, -7) (1, -6) (5, 0) (0, -7.5)

1 answer:

5 0

I feel that the best way to solve is by using elimination method. This is what you do.....
3x - 2y = 15
4x - y = 20
Multiply the bottom equation with -2.
3x - 2y = 15
-8x + 2y = -40
Now add both equations.
-5x = -25
Divide.
x = 5
Now plug in your x-value into any one of the original equations.
3(5) - 2y = 15
15 - 2y = 15
Subtract 15 from both sides.
-2y = 0
Divide.
y = 0
So your solution is (5,0).
I hope this helps love! :)

You might be interested in

How many square feet of outdoor carpet will we need for this hole? Need pronto

RUDIKE [14]

Answer:

63 ft^2

Step-by-step explanation:

We know that the area for the rectangle is 72 feet squared.

We also know that the area for the triangle is 9 feet squared.

To find out the area of the whole thing you subtract 72-9 whcih gives you 63.

6 0

3 years ago

What are the coordinates of the point? A coordinate grid with a dot placed in the second quadrant. The dot is to the left of pos

GenaCL600 [577]

We know that the point is in Q II. Thus, the x-coordinate of this point will be negative and the y-coordinate will be positive.

The y-coordinate is essentially given, and is y=4.
Imagine drawing a vertical line thru x=-2. This line will intersect y=4 at (-2,4).

The coordinates of the point are (-2, -4).

3 0

3 years ago

2. A random sample of adults are asked about their preferences for a first dinner date with

Ira Lisetskai [31]

All the attatchments include the directions below:

Prepare a two-way table as shown below.

Enter the number 50 in the two-way table

Prepare a column total and enter 68 for the total number of people who split the check.

The total number of people who do not eat desert are 56, and the total number of people who took the survey are 122. Enter both values.

The remaining values can be found out as shown below.