egmoccer6yai egmoccer6yai

11-08-2016
Mathematics

contestada

what is the solution to the system of equations? x-y=7 3x-2y=8

Respuesta :

Ckaranja Ckaranja

13-08-2016

x-y=7
3x-2y=8
Multiplying equation I by 2;
2x-2y=14
3x-2y=8
Subtracting equation 1 from equation II;
x=-6
Replacing for x in equation II
3(-6)-2y=8
-18-2y=8
2y=-18-8
2y=-26
y=-13

Answer Link

Otras preguntas

"Within which structure does the placenta normally develop? (1)A (2)B (3)C (4)D "

solve 2(2 - x) less than or equal to -3x - 2 for x

What is the key difference between a liquid and a gas?

When an unbalanced force acts on an object?

How many neutrons does bromine have? a. 10 b. 35 c. 45 d. 80

Convert the angle 13°38'35" to decimal degrees and round to the nearest hundredth of a degree.

On Carrie’s map, Greenville and North Valley are 4.5 inches apart. The scale on her map is 1 inch = 20 miles. How far is Greenville from North Valley?

What northern group was compared to southern slaves? Northern farmers Those in small villages that worked the land Factory laborers City dwellers in crampe

Find the measure of ∠C if ∠A = 3 2 x + 20 ∠B = 7 2 x + 20 ∠C = 5 2 x + 40 ∠D = 3 2 x + 10

broccoli costs $1.50 per pound at a grocery store. how much money does 64 ounces broccoli costs before tax