So here just simplify all of the answer choices.
A gets you 6xy + 9xy - 18y, so that's correct.
B gets you 6xy + 9xy - 18x, which is wrong.
C is 6xy + 9xy - 18y, which is correct.
D is 5xy - 6xy^2, which is wrong.
E gets you 15xy - 18y, which is correct because it is the simplified version of the original equation.
F gets you 15xy - 18y, which is also correct.
So choose A, C, E, and F.
Answer:
B. -2/5
Step-by-step explanation:
Use the "rise over run method"
Do this by finding two points on the graph, then finding the distance between the two points. First find the vertical distance, then the horizontal. The direction represents whether the slope will be negative or positive. When it goes up, it'll be positive, down=negative. Right=positive, left=negative. Two negatives make a positive, but one positive and one negative make a negative.
Answer:
178 miles
Step-by-step explanation:
We know that there is a constant of $14.20 that is the fee. This can represent b in our slope intercept formula. For every mile, the cost is 16 cents, which can replace m when x represents the number of miles driven.
y=mx+b
y=.16x+14.20
We know her entire bill is 42.68, so we can plug that in as y and solve for x.
42.68=.16x+14.20
Minus 14.20 from both sides
28.48=.16x
Divide both sides by .16
x=178
A continuous variable<span> is a </span>variable<span> whose value is obtained by measuring. A </span>random variable<span> is a</span>variable<span> whose value is a numerical outcome of a</span>random<span> phenomenon. A </span>discrete random variable<span> X has a countable number of possible values. Example: Let X represent the sum of two dice</span>