Answer:
Step-by-step explanation:
A system of equations has no solutions if you end up with a contradiction. For example, the system of two equations
y = 2x + 4
y = 2x
If you subtract the second equation from the first, you get
0 = 4
an obvious contradiction. If you were to graph the equations, you would see that the lines are parallel. They never intersect, so there is no point that satisfies both equations.
Answer:
(a) =210
(b) = 0.11
Step-by-step explanation:
Sampling distribution of the mean = 50 × 6 × 0.7= 210
Now to get the null divide 0.7 by 6
This gives 0.11
Answer:
The radius of the circle is 14 inches.
Step-by-step explanation:
How is the circumference of a circle related to its radius?
.
In brief,
.
For this question,
, and
needs to be found.
Divide both sides of the equation by 
:
.
.
In other words, the radius of this circle is 14 inches.
<span> 7.75 = 7 3/4
or
</span><span> 7.75 = 775/100</span>
