Answer:
7
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Answer:
5 sqrt2.
Step-by-step explanation:
5 sqrt 8 - sqrt 18 - 2 sqrt 2
= 5 sqrt(4*2) - sqrt(9*2) - 2 sqrt2
= 5 sqrt4*sqrt 2 - sqrt 9*sqrt 2 - 2 sqrt2
= 10 sqrt2 - 3 sqrt2 - 2 sqrt 2
= 5 sqrt2.
The height will be found using the formula:
sin θ=opposite/hypotenuse
opposite= height h
hypotenuse=length of the ladder
thus
sin 52=h/15
thus
h=15sin52
h=11.82 ft~ 11.8 ft (to the nearest ft)
