He walked
5 miles.
Solutions (via elimination or substitution) are:
x is the number of hours he spent walking, and 5x is the number of miles he walked.
. He walked for 5 miles.
y is the number of hours he spent on the bus, and 60y is the number of miles he rode on the bus.
. He rode the bus for 30 miles.
Answer:
1st one is not a right triangle.
2nd one is not a right triangle.
3rd one is not a right triangle.
4th one is a right triangle.
Step-by-step explanation:
1, 2, and 3 could also be "not enough information".
Answer:
Total favourable outcomes = 36
No. of favourable outcomes of getting a sum of 2 = 1
Probability of getting a sum of 2 = 1/36
Answer:
False
Step-by-step explanation:
In this case, i woudnt reccomend to use integration by parts, becuase you are not simplifying the expression by doing an integration and a derivation. It is not easy to integrate 1/x³+1, and if you derivate it, then a natural logarithm would appear, and the integral wont be easier after this parts step.
It is a better idea to use integration by substitution. Note that if you replace x³+1 by a variable y, we have that dy = 3x² dx. We can easily make a 3xdx appear in the integral by multiplying and dividing by 3, solving the integral easily:
(Note that, if x ranges from 0 to 1, then u = x³+1 ranges from 0³+1 = 1 to 1³+1 = 2)
