3 years ago

Determine if (2, - 1) is a solution 2x - 4y = 8 to the system - 3x + 6

Mathematics

1 answer:

Westkost [7]3 years ago

8 0

Answer:

not a solution

Step-by-step explanation:

substitute the coordinates of the point into both equations and compare values on both sides. If both equations are true then the point is a solution.

2(2) - 4(- 1) = 4 + 4 = 8 ← true

- 3(2) + 6 = - 6 + 6 = 0 ≠ - 1

then (2, - 1 ) is not a solution of the system

You might be interested in

What is the y-intercept of the line y=4x-3?

Kobotan [32]

(0,-3) because that’s what it is

3 0

3 years ago

Plz help asap and plz show me how to do this..thxs I really need help with this

Fed [463]

G is the answer because if you set x as the value of B, then x+(x+10)+(x+30)=180 so x=46.67. then you add 10 to that because the value of A is 10 more than B

3 0

4 years ago

Can anyone help me with this problem?

olya-2409 [2.1K]

Answer:

Step-by-step explanation:

Just add the numerators if both fractions to get: a + 1 = a1

6 0

2 years ago

Read 2 more answers

Simplify- square root x exponent 48<br><br> /x48

Artist 52 [7]

√x^48 = x^24. ,..,......,,,

7 0

3 years ago

Find x:<br> (4x^2-25)^2-9(2x-5)^2=0

Feliz [49]

Answer:

$(4 {x}^{2} - 25)^{2} - 9(2x - 5)^{2} = 0 \\ \\ {(4 {x}^{2} - 25)} (4 {x}^{2} - 25) - 9(2x - 5)(2x - 5) = 0 \\ \\( 16 {x}^{4} - 200 {x}^{2} + 625) - 9(4 {x}^{2} - 20x + 25) = 0 \\ \\ (16 {x}^{4} - 200 {x}^{2} + 625) + ( - 36 {x}^{2} + 180x - 225) = 0 \\ \\ 16 {x}^{4} - 236 {x}^{2} + 180x + 400 = 0 \\ \\ 4(x + 1)(x + 4)(2x - 5)^{2} = 0 \\ \\ x + 1 = 0 \\ x = - 1 \\ \\ x + 4 = 0 \\ x = - 4 \\ \\ {(2x - 5)}^{2} = 0 \\ 2x - 5 = 0 \\ 2x = 5 \\ x = \frac{5}{2}$

I hope I helped you^_^

6 0

3 years ago