The answer to the above system of equations is
x = -1
y = 1
z = 3
Step-by-step explanation:
Let's multiply the first equation by 2 then subtract the 3rd equation from the first:
Now let's subtract the second equation from the first
Now let's subtract our two new equations with two variables
Let's now substitute y equals 1 into one of the new equations x - 6y = -7
Now that we have answers for x and y we can substitute them into any of the first three original equations above
Now let's check by plugging in our values x = -1, y = 1 and
z = 3 into any of the other 3 equations
Answer:
x-29/2
Step-by-step explanation:
multiply 12.50 by 16% to find the new cost
12.50 * 1.16 = 14.50 per student
14.50 * 50 = $725
Answer:
C. y < -1/5x + 1
Step-by-step explanation:
We can eliminate A and B because the inequality sign is incorrect. If we were to graph those, the shaded area would be above the line, not below. We are left with C and D. Notice in our given graph that the line is dotted, so solution on the line are <em>not </em>included. So our answer would be C. because the inequality sign is y is less than and not y is less than or equal to.
Answer:
price per ounce is about $0.29
Step-by-step explanation:
4.69/16 = 0.293125
So the price per ounce is about $0.29