Answer:
Step-by-step explanation:
You first collect isolate all the variables
-3x+4/5=-2/3x+12
Subtract 4/5 from both side and add2/3x from both sides
-7/3x=56/5
You then multiply both sides by the reciprocal of the coefficient of the variable, in this case -3/7
-7/3x*(-3/7)=(56/5)*(-3/7)
x=-168/35
x=-24/5
Answer:
Move all terms containing y to the left side of the equation.
6y+4x−2=4x−2
Move all terms not containing y to the right side of the equation.
6y=0
Divide each term by 6 and simplify.
y=0
Step-by-step explanation:
Answer:
$375
Step-by-step explanation:
- Convert the 25% discount into a decimal, which is 0.25
- Multiply the original listed price ($500) by the discount as a decimal (0.25), which is $125
- Subtract the original list price ($500) by $125 (the discount as a number). This is $375, which is the answer.
Answer:
We need a sample size of 564.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
For this problem, we have that:
The margin of error is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
Based upon a 95% confidence interval with a desired margin of error of .04, determine a sample size for restaurants that earn less than $50,000 last year.
We need a sample size of n
n is found when 
So
Rounding up
We need a sample size of 564.
Answer:
no solution
Step-by-step explanation:
2 x 2x, 2 x -2, you now have 4x=4x-4, subtract 4x and 4x and you are left with -4
