Check the picture below.
make sure your calculator is in Degree mode.
Answer:

Step-by-step explanation:
If A = (-3,-1) and B = (4,4), the slope of AB is

Two perpendicular lines have slopes that have product of -1:

The equation of the line BC with slope -1.4 and passing through the point B(4,4) is

Answer: A
Step-by-step explanation: Hope this help :D
Answer:
Cost: $14.349
Markup: $15.649
Step-by-step explanation:
1. Rewrite the percent as decimal. Divide it by 100, as following:
109/100=1.09
3. Now, knowing that Baby blankets sell for $29.99 after a markup rate based on cost of 109%, you can write the following expresion:

Where x is the cost.
4. You must solve for x, then, you obtain:

5. The markup is:
