Answer:
A and D.
Step-by-step explanation:
Resort to graphs.
Answer:
Step-by-step explanation:
Simplified the following system of equations into a linear equation.
Graphed (plot the points) the linear equation onto the graph.
To get the solution (2,-2) (x,y)she went positive 2 to the right and -2 down.
Answer:
t》5 or t《-9
Step-by-step explanation:
f(t) = √(t+9)(t-5)
For a function to be defined, under the radical should be non-negative values
(t+9)(t-5)》0
Roots: 5, -9
t《-9 or t》5
Answer:
x=-58/15
Step-by-step explanation:
distribute first 10-2.5x+12=21-10x-28
Simplify(add the numbers) 22-2.5x=-7-10x
move the variable to the left side 22-2.5x+10x=-7
move the constant to the right side -2.5x+10x=-7-22
simplify like terms 7.5x=-29
divide by 7.5 x=-58/15
alternate forms are x=-3 13/15 or x=-3.86
