Answer:
v=5.42m/s
Step-by-Step Explanation:
We can use conservation of energy to solve this
mgh=1/2mv^2
2gh=v^2
v=sqrt(2gh)
v=sqrt[2*9.8m/s^2*(6.5-5)]
v=5.42m/s
Answer:
2
Step-by-step explanation:
Subtract the number with the term both sides ( which is 9)
Complete the square for the x terms and y terms.
( To complete the square divide the coefficient term by 2 and square it, then add that product to both sides.)
Take the square root of the right side to find the radius
Let's solve for our solutions and then add them.
2|x - 1| - 4 = -2
2|x - 1| = 2
|x - 1| = 1
First solution:
x - 1 = 1
x = 2
Second solution:
x - 1 = -1
x = 0
Thus, the sum of our solutions is 2.
50 km/h = 50,000m / hr
= 50,000 / 60 = 833.333 m / minute
The tire rotates 500 times for this period
So the circumference of the tire = 833.333 / 500 m
= 1.67 m to the nearest hundredth
=
Answer:
b. 200/x
Step-by-step explanation:
Hi, to answer this question we have to analyze the information given:
First half speed= x
Second half speed= 1.5 x (1.5 times faster on the second 120 miles of his trip)
Since:
Time = distance /speed
Total time = 1st half time + 2nd half time
Replacing with the values given
Total time =120/ x + 120/1.5x
Total time = 180/ 1.5x + 120 /1.5x
Total time = 180+120/1.5x
Total time = 300/1.5x = 200/x
Feel free to ask for more if needed or if you did not understand something.