Answer:
okay I will just give the answers 3- 240, 4-69,000 5-42 6-4.80 7- 15 8-115
Step-by-step explanation:
AB = ==> distance between the bottom of the plank; and the wall ===> 3 ft.
C ====> 49 degrees
For letter a, to solve for AC:
AC ==> HYPOTENUSE. The angle C is the OPPOSITE side of AB.
use sine :
sin A ===> opposite/hypotenuse
Solve:
sin 49 ====> 3/AC
AC ====> 3 / sin 49
AC ====> 3.96 ft.
For letter b, to solve for BC:
We are now given with the base (3 ft.); and; the hypotenuse (3.96 ft.) so we can use the Pythagorean theorem:
a^2 + b^2 = c^2
Let:
a ===> AB
b ===> BC
c ===> AC
(AB)^2 + (BC)^2 ===> (AC)^2
3^2 + (BC)^2 ===> (3.96)^2
(BC)^2 ===> (3.96)^2 - 3^2
(BC)^2 ===> 6.6816
sqrt (BC)^2 ===> sqrt 6.6816
Answer: BC ===> 2.58 ft.
Hope that helps!!!! : )
Answer: I pretty sure it’s D or A but I’m going with A
Step-by-step explanation: I hope this helps you and I know I’m kinda late but I still hope this helps! Have a great day!
The negative before parenthesis gonna multiply to the number in the parenthesis so we will have : -282-1017 so we can add them together and we gonna have :
-282-1017 = - 1299 :))) thats the answer
i hope this be helpful
