Answer:
when you dont feel like using a word problem u can do a expression instead
Step-by-step explanation:
Solving for the elapsed time
distance traveled = (speed of first train + speed of second train) * elapsed time
280 miles = (95 mph + 105 mph) * elapsed time
280 miles = 200 mph * elapsed time
elapsed time = 280 miles / 200 mph
elapsed time = 1.4 hours
elapsed time = 1 hour and 24 minutes
It will take 1 hour and 24 minutes for the two trains to be 280 miles apart.
Answer:
5 cm
Step-by-step explanation:
Perimeter of a semicircle is :
P = πr + 2r
P = r(π + 2)
25.71 = r(3.14 + 2)
25.71 = r(5.14)
Divide both sides by 5.14
25.71 / 5.14 = r(5.14) / 5.14
5.0019455 = r
Hence, radius of semicircle = 5 cm
Answer:
measure of angle YVZ=56°
Step-by-step explanation:
angle WVY and angle YVZ form a right angle, meaning they add to 90 degrees.
We can make an equation out of this:
2x+3x+5=90
solve for x
5x+5=90
5x=85
x=17
substitute x back into the expression for angle YVZ because that's the measure we're looking for
angle YVZ=3(17)+5=56
The distance is 19 yards or 18.9 yards:
because tan(10)=opposite/adjacent=3.33/x and x is distance
x=3.33/tan(10)=18.9 yd
