Answer:
4
Step-by-step explanation:
9/9x - 5/10x + 1/9x = 4
25% off means you are only paying 75% of the cost.
0.75(1100) = $825
Answer:
Point Form:
(7, 8)
Equation Form:
x=7, y=8
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
none of them is true
Step-by-step explanation:
Just check each statement to see if it is true.
A. The equation -3|2x + 1.2| = –1 has no solution.
But the equation has an infinite number of solutions.
So the statement is false.
B. The equation 3.5|6x – 2| = 3.5 has one solution.
But the equation has two solutions, so the statement is false.
C. The equation 5|-3.1x + 6.9| = –3.5 has two solutions.
But the equation has zero solutions.
So the statement is false.
D. The equation -0.3|3 + 8x| = 0.9 has no solution.
The equation has one solution..
So the statement is false.
Draw a cartesian plane, create a graph with the equation x = y^2 - 2
then substitute numbers into the equation so that it is true, to find points on the graph, e.g. substitute y with 1, you get
x = 1^2 - 2
x = 1 - 2 = -1, so when y = 1, x = -1, this point is (-1, 1)
for the next substitute y with 2,
x = 2^2 - 2
x = 4 - 2 = 2, the point is (2, 2)
you might want to try negative values of y
y = -1, x = (-1)^2 - 2
x = -1 the point is (-1,-1)
then plot the points on the graph