Answer:
a. 
b. 
c. 
d. 
Step-by-step explanation:
Gradient is just another similar term for slope l,
, and it can be calculated by
where
and 1
is the
-coordinates of point 
We let
be point
and
be point
, we can then write the equation:
.
It also says that the points are with a gradient of
so
. We can then write the equation:

Finding
If
:

Writing an expression for
in terms of
.

Writing an expression for
in terms of 

Finding
if 

<span>the Law of Cosines </span>b^2=a^2+c^2-2accosB
Hey there! I'm happy to help!
We see that Noah rides his motorcycle 90 miles is 2 hours and 30 minutes, which is 150 minutes. We want to find his mph. To find this his mph, we want to find how far he has gone in one hour.
How much bigger is 150 than 60?
150/60=2.5
150 is 2.5 times bigger than 60. This means that we need to divide 90 by 2.5 to figure out how far Noah rode in 1 hour.
90/2.5=36
Therefore, Noah's average speed is 36 mph.
Have a wonderful day! :D
Answer: 0.074
Step-by-step explanation:
Given : The total number of U.S. adults in the sample = 800
The number of U.S. adults dine out at a restaurant more than once a week = 216
The probability for an adult dine out more than once per week :-

If another person is selected without replacement ,then
Total adults left = 799
Total adults left who dine out at a restaurant more than once a week = 217
The probability for the second person dine out more than once per week :-
Now, the probability that both adults dine out more than once per week :-

Answer: The answer is 15
HOPE THIS HELPS AND HAVE A VERY GOOD DAY