B. It allowed all southern children to attend school
By applying the sine trigonometry, the value of leg s is equal to: F. 8 units.
<h3>How to apply basic trigonometry?</h3>
In order to determine the value of leg s, we would apply basic trigonometry. From the diagram of the right-angled triangle shown above, we can deduce the following parameters:
Next, we would use the sine trigonometry to determine the value of leg s:
Sinθ = Opp/Hyp
Sin45 = s/8√2
1/√2 = s/8√2
s√2 = 8√2
s = (8√2)/√2
s = 8 units.
Read more on sine trigonometry here: brainly.com/question/20367642
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The United States and the Soviet Union came to the brink of nuclear war in 1962 over Soviet missile bases in Cuba. This was referred to as the "Cuban Missile Crisis". The US was mostly concerned about the very close proximity of the missiles to its shores.
The correct answer is option D. "Companies replaced hand-operated brakes with air brakes on trains". The development of air brakes on trains was a significant improvement of railroad safety. Air brakes function much more faster than hand-operated brakes, because hand-operated brakes required that the brakemen turned the brakes in one car and jump to the next to set the brakes on, and so on.
