Answer:
58.4
Step-by-step explanation:
delta math give up
Answer:
12w=108
Step-by-step explanation:
Ling earns $12 each time he shovels his neighbor’s driveway. He earned a total of $108 shoveling the driveway last winter. Which of the following equations could be used to find w , the number of times Ling shoveled his neighbor’s driveway last winter?
Answer:
Step-by-step explanation:
To graph the equation of line, we need to find the intercepts:
1) To find x-intercept: put y = 0
0 = -10x + 3000
Solving for x:
10x = 3000
x = 3000/10 = 300
A( 300, 0)
2) To find y intercept: put x = 0
y = -10(0) + 3000
y = 3000
B(0,3000)
Now plotting line through these two points gives the graph.
3) To find the slope of the equation:
Using two point form:
m = -10
Please see the attached file for graph:
The discriminant D is found by this formula
D = b^2 - 4ac
there are 3 possible outcomes
1) If D is smaller than 0, ie D < 0, then there are no roots
2) If D is equal to zero (D = 0), then there is exactly one root. This root is rational assuming the coefficients are integers. This is called a double root
3) If D > 0, then there are 2 different roots. If D is a perfect square, then these two roots are rational numbers (aka fractions of whole numbers) assuming the coefficients are integers. If D is not a perfect square, then the two roots are irrational numbers.
