Answer:
x=-27
Step-by-step explanation:
27+4x=3x
So 27=-x
x=-27
I don’t wanna give the exact answer, i want to help you and lead you in the right place so you know the concept and process if a similar question is on an assessment. basically, the set of equations is set up for substitution method. we can agree that y equals 3x-3. so in the second equation, instead of writing “2y” you would SUBSTITUTE the y for 3x-3. so the equation would be 2(3x-3)-x=4. do the distributive property. once you get the equation after doing the distributive property, you solve for x using your algebra skills from previous units (cancel out x’s, for instance). your answer is your x coordinate. in order to find your y, you substitute whatever number you got for x and plug it in to one of the equations, doesn’t matter which. you will then solve for Y using your algebra skills you learned from previous units. after solving, you should get what y=. now you put the number in coordinate pair form which is (x,y)
13)
-4-7/ -6 - -4
-11/ -2
5.5 is the slope of this one
14) 16-8/ 9-20
8/-11
-1.375 is your slope
Hopes you out
-Zayn Malik
Answer:
94
Step-by-step explanation:
Margin of error = E = $ 120
Confidence Level = 95%
The z-score for 95% confidence level from the z-table = z = 1.96
Population standard deviation = σ = $593
Sample size = n = ?
The formula to calculate the margin of error is:
Re-arranging the equation, we get:
Using the given values in above equation, we get:
Rounding of to next higher integer, we get n = 94
Thus, we need a sample size of 94 to estimate an unknown population mean μ
15 as a percent would be 1500%.
In order to find the percentage of 15 you have to multiply 15 by 100.
If you are looking for 15% of 15 it would be 2.25.
I hope this answer helps, If not just let me know! :)
Have a Great Day!!
