robertalfa23ow8xa8 robertalfa23ow8xa8

02-04-2020
Mathematics

contestada

If 5x + 3y = 12 and 4x - 5y = 17, what is y?

Respuesta :

ghanami ghanami

03-04-2020

Answer:

y=-1

Step-by-step explanation:

5x + 3y = 12 ....(*)

4x - 5y = 17....(**)

multiply (*) by : -4 and(**) by 5

you have : -20x -12 = -48.....(1)

20x -25y = 85....(2)

add(1) and(2) : -37y = 37 so : y =37/-37= -1

Answer Link

Otras preguntas

Find the vertex of the parabola. Is the vertex a maximum or minimum? What is the equation for the axis of symmetry? -5x^2 + 20x + 25 =y

One number is 1/2 of another number. The sum of the two numbers is 3. Find the two numbers.

b. C6H1206 (s) → CH4 (9) + CO2 (g) what is this in words

Compare and contrast the narrator's point of view at the beginning to the end of the story. Note any differences and the possible causes behind these difference

URGENT DUE TODAY!!! PLEASE HELP!!! i will give brainliest

. Solve for x: 2% of x = 17 a 34 b 8.5 c 85 d 850

After combing through the data, you have noticed that firms hiring Fishergraduates earn average abnormal returns of 3% per year over the next few years. You are

The length of one side of a square is x+8. What is the area of the square?

Choose the statement that is correct. A. The MC curve intersects the AFC, AVC, and ATC curves at their minimums. B. Initially as output increases, average va

For each of the following, find a word ending in ‘ *cate* ’ 1. Suspend a student. 2. Cut the end of. 3. Make unclear. 4. Very detailed. 5. Highly sensitive. 6.