PLEASEEEE HELLLPP: A team mom ordered 100 pizzas for $1255. Cheese pizzas cost $11.50 each and pepperoni pizzas cost $13.00 each
1 answer:
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ANSWER
C. 35 men
EXPLANATION
Let m represent the number of men needed and d represent the number of days.
From the question,the number of men needed varies inversely to the time needed to complete the project.
We can write the inverse variation equation.
where k is the constant of variation.
When m=28, d =90.
We substitute these values into the variation equation to determine the value of k.
Now the equation becomes:
When d=72,
Therefore he needs to have 35 men working.
Answer:
As the product of the slop of both lines is -1.
Therefore, the given equations are perpendicular.
Step-by-step explanation:
Given the equations
The slope-intercept form of the equation is
where m is the slope and b is the y-intercept.
Writing both equations in the slope-intercept form
So by comparing with the slope-intercept form we can observe that
slope of equation = 3
i.e.
also
So by comparing with the slope-intercept form we can observe that
the slope of equation = -1/3
i.e.
as
The slope of the perpendicular line is basically the negative reciprocal of the slope of the line.
so
The slope is the negative reciprocal of the slope
Also, the product of two perpendicular lines is -1.
i.e.
VERIFICATION:
It is clear that the product of the slop of both lines is -1.
Therefore, the given equations are perpendicular.