12x42=504
504 cents earned every day when 42 papers are delivered
For a week= 504x7
3528cents
Answer:
y = -3x + 2
Step-by-step explanation:
The linear equation is in the form
y = mx + b
where m is the slope and b is the y-intercept
the slope can be calculated using two points
Let us have; (-2,8) and (0,2)
The equation of the slope is ;
m = (y2-y1)/(x2-x1) = (2-8)/(0+2) = -6/2 = -3
So for the y-intercept, we select any of the points to substitute
Let us have (0,2)
Substitute this into;
y = -3x + b
2 = -3(0) + b
b = 2
So the equation is;
y = -3x + 2
20%
70 x n%= 56
n% = 70 x 56
n = 0.8 x 100
n = 80
the percent decrease = 100 - 80
= 20 %
Answer: z=-190
Step-by-step explanation:
Answer:
y = sqrt(-x^2 + 6 x + 16) - 2 or y = -sqrt(-x^2 + 6 x + 16) - 2
Step-by-step explanation:
Solve for y:
-12 - 6 x + x^2 + 4 y + y^2 = 0
Subtract x^2 - 6 x - 12 from both sides:
y^2 + 4 y = -x^2 + 6 x + 12
Add 4 to both sides:
y^2 + 4 y + 4 = -x^2 + 6 x + 16
Write the left hand side as a square:
(y + 2)^2 = -x^2 + 6 x + 16
Take the square root of both sides:
y + 2 = sqrt(-x^2 + 6 x + 16) or y + 2 = -sqrt(-x^2 + 6 x + 16)
Subtract 2 from both sides:
y = sqrt(-x^2 + 6 x + 16) - 2 or y + 2 = -sqrt(-x^2 + 6 x + 16)
Subtract 2 from both sides:
Answer: y = sqrt(-x^2 + 6 x + 16) - 2 or y = -sqrt(-x^2 + 6 x + 16) - 2
