Answer:
Option c.
Step-by-step explanation:
We have the set of real numbers greater than 8 and B the set of real numbers greater than 5 here:
A: x+2>10 ⇒ x>8
B: 2x > 10 ⇒ x>5
8∉A ; 8∈B
Note: We can see (graph) that the intervals are open, so the corresponding points do not belong to their respective sets.
Answer:
Step-by-step explanation:
The formula for area of a rectange is lw, where l is length and w is width. Since x-4 and 5x+2 are the sides, we can multiply them together to give us the area. We do (x-4)(5x+2). We use the FOIL method (First Outside Inside Last) and get 5x^2-18x-8.
Answer:
It had flown 2620 ft along the diagonal.
Step-by-step explanation:
When the plane is taking off it forms we can form a triangle with it's height, horizontal distance and diagonal distance, which can be seen in the attached drawing. We can use the sine relation on the right triangle to determine "x", as shown below:
sin(11°) = 500/x
x*sin(11) = 500
x = 500/[sin(11)] = 2620 ft
It had flown 2620 ft along the diagonal.
