Answer:
V≈6.6×10-8m³
Step-by-step explanation:
Its not hard
For small angles, x, in radians,
tan(x) ≈ sin(x) = x
Use this to create an approximate diagram for the problem as shown in the figure below.
The actual deflected shape is parabolic, but it is approximated by an isosceles triangle with small equal angles.
The extend length is 3 km + 12 cm, which is
3000 + 0.12 = 3000.12 m
Half of the extended length is 1500.06 m
Let h+ the rise of the center of the rail above ground.
From the Pythagorean theorem, obtain
h² + 1500² = 1500.6²
h² = 1500.06² - 1500² = 180.004
h = 13.4 m, which is about 0.9% of the original length.
Answer: 13.4 m
20% in decimal form (and the form we need to do math with) is 20/100 or 0.20 (because there’s 20 units for every cent; 20 for every hundred).
You multiply 15 (the total cost) by 0.20 to get 20% of 15, then add 15 to 20% of 15 to get the total cost.
0.2(15) + 15 = 18
This works because you are multiplying 15 by one fifth of its value (20%) then adding the actual cost to it.
Answer:
Figure D
Step-by-step explanation:
Answer:
35x^2y+49xy^2
Step-by-step explanation:
Multiply 7xy(5x + 7y)
7xy⋅5x+7xy⋅7y
Answer 35x^2y+49xy^2