1. If the make up originally costs $4.30 but is on sale for 40% off, we need to find the sales price
Discount amount = original * discount rate = 4.30 *(.40) = $1.72
Sales price = original price - discount amount = 4.30 - 1.72 = $2.58
2. So we need to multiply the sales price by the tax rate
Tax amount = sales price * tax rate = 2.58 *(.06) = 0.1548
Final Cost = sales price + tax = $2.58 +$0.1548 = $2.7349 = $2.73
Answer:
no real solutions
Step-by-step explanation:
If it is a quadratic equation, there are always two solutions, regardless of the value of the discriminant.
When the discriminant is negative there are no real solutions, but there are two <em>complex</em> solutions.
35 is 70% of 50. You can set up a proportion to find this answer. (35 over 50 and x over 100)
Answer:
Bumby Avenue is represented by the line:
y = -4*x - 7.
Primrose Avenue can be represented with:
8x + 2y = 17.
We may want to find the point where both avenues intersect.
Let's isolate y in this second equation:
2y = 17 - 8x
y = 17/2 - 8x/2 = -4*x + 17/2
Now we can see that the equation for Primrose Avenue has the same slope than the equation for Bumby Avenue, and when two linear equations have the same slope, means that the lines are parallel.
Then we can conclude that Primrose Avenue and Bumby Avenue are parallel, so they never meet eachother.