Answer:
Choice b.
Step-by-step explanation:
170 is a little more than half of 330 so that's the onee.
Answer:
Parallel
Step-by-step explanation:
in a Standard from equation, Ax+By=C
slope=-A/B
The slope of first line is -3/-1=3
The slope of second line is -6/-2=3
Same slopes but different C values mean they r parallel.
Answer:
A prime numbers are numbers which have only two factor
Answer:
(0,-2), (5,0) and (10,2).
Step-by-step explanation:
Given equation is
.
Now we need to find 3 pairs of solutions in (x,y) form for the given equation.
As
is a linear equation so we are free to pick any number for x like x=0, 5, 10
Plug x=0 into
, we get:





Hence first solution is (0,-2)
We can repeat same process with x=5 and 10 to get the other solutions.
Hence final answer is (0,-2), (5,0) and (10,2).
Answer: 0.0228
Step-by-step explanation:
Given : The mean and the standard deviation of finish times (in minutes) for this event are respectively as :-

If the distribution of finish times is approximately bell-shaped and symmetric, then it must be normally distributed.
Let X be the random variable that represents the finish times for this event.
z score : 

Now, the probability of runners who finish in under 19 minutes by using standard normal distribution table :-

Hence, the approximate proportion of runners who finish in under 19 minutes = 0.0228