Solve the following system of equations 2.5x-1.9y=4.9 -0.5x+1.8y=4.7

2.5x-1.9y=4.9

-0.5x+1.8y=4.7 Multiply this equation by 5 to obtain a first term of -2.5x:

-2.5x + 9y = 23.5 To this version of the 1st equation add the entire 2nd equation:

-2,5x + 9y = 23.5

2.5x -1.9y = 4.9

Combine these two equations, which will eliminate x:

7.1y = 28.4 Now divide both sides by 7.1 to obtain a value for y:

y = 28.4 / 7.1 = 4

Now substitute 4 for y in either of the original equations:

2.5x - 1.9(4) = 4.9, or 2.5x = 12.5. Sovling for x, x = 12.5 / 2.5 = 5.

Then the solution is (4, 5).

point a is the center of this circle.

the ratio of the lengths of (ef/bc) and (ad/ih) is 2: 1.

step-by-step explanation:

the quotient is 4x^2 - 27x + 167 with a remainder of -996

step-by-step explanation:

in synthetic division, use -6 as the divisor and use the coefficients {4, -3, 5, 6}:

-6     )   4     -3     5     6

                -24   162 -1002

          4   -27   167   -996

thus, the quotient is 4x^2 - 27x + 167 with a remainder of -996.

note:   your "4x°-3x+5x+6" is ambiguous / incomplete.   i had to assume that you meant '4x^3 - 3x^2 + 5x + 6."