The Exact form would be 82/15
The decimal form would be 5.46
The mixed number form would be 5 7/15
Answer:
I think
Step-by-step explanation:
This is a system of equations, meaning you find the value of one variable and substitute it into the other equation
if y=-x^2-4x+23 we can put that into the second equation for y
This gives us 2x+(-x^2-4x+23)=15
Lets simplify this and set it equal to 0 by moving the 15 over
-x^2-2x+8=0
This gets us x=-4, 2
Lets try plugging both those back into our first equation and see what value of y we get
y=-(-4^2)-4(-4)+23; y=23
y=-(2^2)-4(2)+23; y=11
So you get two sets of solutions
(-4,23) and (2,11)
Answer:
This interval in the form of margin of error is expressed as 0.45 ± 0.15.
p = 0.45
MOE = 0.15
Step-by-step explanation:
A confidence interval is calculated from a sample statistic (in this case, a sample proportion) and substracted or added a margin of error (MOE) for the lower and upper bound respectively.
This can be expressed as:

If we substract the upper bound from the lower bound, we can calculate the margin of error as:

With this information, we can calculate the sample proportion p:

Then, we can express the confidence interval as:

Answer:
11.28(94)
this is what i got but i still don't know that question.