Answer:

Step-by-step explanation:
Add the amounts together:

Convert the whole number 1 into a fraction with denominator 4:

As all the denominators are the same, we can simply add the numerators:


Finally, convert the improper fraction into a mixed number:

Answer:
-11
Step-by-step explanation:
y=-7-4= -11
Answer
4
Step-by-step explanation:
Add 9 to 11, then divide that by 5.
Answer:
y = 
Step-by-step explanation:
This is the concept of trigonometry, we are required to calculate the number of floors the building has given the information above;
# floors=[height of the building]/[height of each floor]
height of each floor=17 ft
let the height of the building be,h.
h is given by;
tan theta=opposite/adjacent
theta=80
opposite=h
adjacent=75 ft
thus
tan 80=h/75
h=75 tan 80
h=425.35 ft
thus the number of floors will be:
425.35/17
=25.020≈25 floors