Answer:
7.44
Step-by-step explanation:
Given:
Steel pipe weighs = 5 pounds per foot.
Question asked:
How much does it weigh in kilograms per meter ?
Solution:
We will convert foot into meter and pound into kilograms.
1 foot = 0.305 meters
1 pound = 0.454 kilograms
5 pounds = ![5\times0.454=2.27\ kilograms](https://tex.z-dn.net/?f=5%5Ctimes0.454%3D2.27%5C%20kilograms)
By using unitary method:
0.305 meters of steel pipe weighs = 2.27 kilograms.
1 meter of steel pipe weighs = ![\frac{2.27}{0.305} =7.44](https://tex.z-dn.net/?f=%5Cfrac%7B2.27%7D%7B0.305%7D%20%3D7.44)
Therefore, it weigh in kilograms per meter is 7.44
The correct answer is:X=7
We know that cos A = 0.34.
We have to find the measure of ∠ A in degrees ( and to round it to the nearest hundredth ):
∠ A = cos^(-1) 0.34 = 70.12313° ≈ 70.12°
Proof: cos 70.12° ≈ 0.34
Answer:
∠ A = 70.12°
A(3)= 0
Based on this
a(1)=6
a(2)=3
a(3)=0
a(4)=-3
a(5)=-6