B is the answer because none of the others will be right and b is the one you should always do when to solve a rea word problem
Answer:
B
Step-by-step explanation:
B
x - 4 squared provides 2 real zeros that are the same. These two are not distinct.
The other two come from x^2 - 7x + 10 which has a discriminate of
sqrt(7^2 - 4*1*10) = sqrt(9) = +/- 3 leading to something real and different.
So x equals 30 because u did 180-150 and y is also 30 since you found x you then add 90 plus 30 and it will give u 120 then 180 minus 120 will be 60 then 90 - 60 because u are trying to find y, and u will get 30.
Answer:
Question?
Is the wording: price of "a" dollars, (in italics)?
If so, the equation would be:
0.8a
Otherwise, if "x" represents the regular price, then the equation would be:
0.8x
Step-by-step explanation:
To get the constant of proportionality (unit rate) you must find the miles driven in 1 hour. To get this you simply divide 200 by 4...
200÷4=50
So, the constant of proportionality is 50 mph.
