Let x = the number
7x = 280
x = 280/7
x = 40
hope this helps :)
Parallel lines have the same a slope. Therefore if
k: y = 3x - 6 → slope = 3
and l: y = mx + b
l || k ⇔ m = 3
l: y = 3x + b
We have the point (-6, -7). Put the coordinates to the equation:
-7 = 3(-6) + b
-7 = -18 + b add 18 to both sides
11 = b → b = 11
Answer: y = 3x + 11
9+(-9)=0 you are showing the opposite sign of the number that added together would give you the sum of zero.
Answer:
640.919 feet
Step-by-step explanation:
Given that there is an antenna on the top of a building. From a location 400 feet from the base of the building, the angle of elevation to the top of the building is measured to be 37°. From the same location, the angle of elevation to the top of the antenna is measured to be 40°
Let the height of building be x and that of antenna be y.
Then by considering right angle formed by horizontal line, vertical height and line made by eye contact we have
Next considering the height with antenna included we get total height