Question: Determine by inspection if each system of equations has a single solution, no solution, or infinite solutions. If the system has a solution, solve the system. 1. {x + 5y = 9, 5y = 6 − x}
2. {x + y = 2, x + 3y = 6}
3. {2x + y = 5, y = 5 − 2 x}
4. {2x + 2y = 2, 2(x + y) = 10}
5. {−2y + 6 = −2x, 2y = 6 + 2x}

answer: im sorry i dont get it

step-by-step explanation:

add 8+12 to get a simplified answer of 12r-20

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²