Step-by-step explanation:
law of sine :
a/sinA = b/sinB = c/sinC
with the sides and the associated angles being opposite in the triangle.
the angle opposite to the ladder is the right angle.
the height of the ladder touch point is opposite of the 78° angle.
so, we get
10/sin(90) = height/sin(78)
10/1 = height/sin(78)
10 = height/sin(78)
height = 10×sin(78) = 9.781476007... ft ≈ 9.8 ft
so, B is the right answer
Answer:
4n is less then or equal to 13-3
Step-by-step explanation:
Answer:
step1:- 8q=21 - 5
step2:-8q=16
step3:-q=<u> </u><u>1</u><u>6</u> = <u>2</u>
8 1
step4:-=<u>2</u>
1
Answer:it will take bank d 8 weeks to get more than bank c
Step-by-step explanation: 10 20 40 80 160 320 640 1280 2560 5120 10240
Use FOIL to help expand the expressions
First
Outer
Inner
Last
When we foil out the expression we get:
Now start multiplying the expression to get:
Combine like terms; Final answer:
so A
