7803x.739 divided by 78
2 answers:
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Answer:
The number of hours must be greater than 9 to make a Company B a better deal
Step-by-step explanation:
Let
x ----> the number of hours
y ----> the total charge in dollars
we know that
The linear equation in slope intercept form is equal to
where
m is the slope or unit rate of the linear equation
b is the y-intercept or initial value of the linear equation
In this problem we have
<em>Company A</em>
The slope is equal to
The y-intercept is equal to
so
The linear equation is equal to
-----> equation A
<em>Company B</em>
The slope is equal to
The y-intercept is equal to
so
The linear equation is equal to
-----> equation B
If a Company B is a better deal
then
solve for x
Rewrite
therefore
The number of hours must be greater than 9 to make a Company B a better deal
Answer:
20 yards
Step-by-step explanation:
First, we have to know how to get from inches to yards. 12 inches = 1 foot, and 3 feet = 1 yard.
Next, we have
as a given. We want to multiply this by our conversions to get the end amount in yards.
We can first multiply our expression by 12 inches = 1 foot. To do this, we can set one number as the divisor and one as the dividend, e.g. 12 inches / 1 foot. However, to figure out which number should be the numerator/denominator, we first must examine our original expression. We want to multiply it by a value that cancels something out in conversion. To do this, we can have the same unit of something in the numerator in one and the denominator in the other in terms of what we're multiplying. Here, we can see that has inches on the top, so we want inches on the bottom in 12 inches = 1 foot. Therefore, we have
=
= 60 feet
=
We have feet as the numerator, so we want feet in the denominator in what we're multiplying this by. In 3 feet = 1 yard, we can multiply this to get
= 20 yards