the faster cyclist's speed is 14mph
before i explain this, remember that distance=time*speed.
for now let's suppose the slower cyclist's speed is x mph, and the faster cyclist's speed is 2x mph, because he/she is going 2 times faster.
both cyclists have been biking for 4 hours, so to find the distance they both travelled in that time, we multiply each of their speeds by 4 (hrs).
so for the slower cyclist, it is x*4=4x miles
and for the faster cyclist, it is 2x*4=8x miles
they cyclists meet after the 4 hours, which means that if you add the distances they travelled in that 4 hours together, you will get 84 miles.
let's make an equation out of this: 4x+8x=84
now we solve for x:
now we know that x=7, so all we have to do is go back to the beginning, and remember when i said, we would suppose the slower cyclist's speed is x mph and the faster cyclist's speed is 2x mph? exactly. we plug 7 in for x and we get 7 mph for the slower cyclist's speed and 14 mph (7*2) for the faster cyclist's speed.
hope this made sense : )
127 is rational number.
the given number 127 is rational because it can be written as the quotient of two integers (p and q) like shown below:
which can be represented as
but if it is the square root of the same number , then it would be an irrational number since the square root of 127 would gives a decimal number that will keep going on and cannot be represented as a fraction.
the probability that it would land on 2 is 1/6. to get a greater number then 4 on the second roll would be 2/6
the cube has 6 sides, with 6 different numbers. 1, 2, 3, 4, 5, and 6.
for it 2 land on 2 it has a 1 out of six chance because of it having 6 sides.
for it to land on a number greater then 2 it would be 2 out of 6 because there are only 2 numbers greater then 4, 5 and 6.
answer: is that it?
because i can you with the rest because i did this one before. but if it's not the same question then i can't.