Answer:
all neg
Step-by-step explanation:
<span>A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is the train’s original speed?
***
let x=original speed
x+5=increased speed
travel time=distance/speed
..
lcd:x(x+5)
150(x+5)-150x=x(x+5)
150x+750-150x=x^2+5x
x^2+5x-750=0
(x-25)(x+30)=0
x=25
What is the train’s original speed? 25 mph</span>
Polygon area = n*side length^2 / [4*tan(180/n)]
side length^2 = polygon area * [4*tan(180/n)] / n
where n is the number of sides
side length^2 = 55 sq inches * (4*tan(180/6)) / 6
side length^2 = 55 sq inches * 4 * tan (30) / 6
side length^2 = (55 sq inches * 4 * 0.57735) / 6
side length^2 =
<span>
<span>
<span>
127.017
</span>
</span>
</span>
/ 6
side length^2 =
<span>
<span>
<span>
21.1695
</span>
</span>
</span>
side length = square root (
<span>
<span>
<span>
21.1695
</span>
</span>
</span>
)
side length =
<span>
<span>
<span>
4.6010324928
</span>
</span>
</span>
Answer <em>X ≥ 10</em>
<em></em>
Step 1- Multiply Both Sides of the inequality by 2! :) = 10+x≥20
Step 2- Move the constant to the right-hand side and change it's side! :)
= x≥20-10
Step 3- Subtrcact the numbers! :) =x≥10
And Final Answer isssss....<em> X ≥ 10! </em>
Hope this helps! Have a great day or night!
Answer: 14:2, 35:5, 21:3
Step-by-step explanation:
