Answer:
add the 11 to both sides to cancel it out.
Step-by-step explanation:
so basically
5x - 11 + 11 = 42 +11
5x = 53
56.07 < 56.7
Because 56.7 is 56.70
The complete question in the attached figure
let
r-----------> <span>the amount charged for a refill
</span><span>b ----------> the amount charged for the egg breakfast.
we know that
2r+b=8.40
3r+b=9.35
Part a) </span><span>Write a system of equations for the situation
the answer Part a) is</span>
2r+b=8.403r+b=9.35<span>
Part b) </span><span>Graph the equations in the system
</span>
using a graph tool
see the attached figure
Part c) <span>Use your graph to estimate how much each item cost.
we know that
</span><span>the point of intersection of both graphs is the solution of the system
</span>
the solution is the point (0.95,6.5)
therefore
r=0.95
b=6.5
the amount charged for a refill is $0.95 the amount charged for the egg breakfast is $6.5
Answer:
At least 547 records need to be studied.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval , we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of .
And the margin of error is:
95% confidence interval
So , z is the value of Z that has a pvalue of , so .
In this problem, we have that:
At least 547 records need to be studied.
Answer:
180%
Step-by-step explanation:
Im not sure I understood the problem
But 180% of 5 is 9