I need help!. My daughters lesson is on improper Fractions and mixed numbers. I need the answers to all of these math problems a
nd also an example explaining how to do them.
1 answer:
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The flat fee that the store charges is $14 and the cost for 7 hours is $56
A linear equation is on the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the initial value of y.
let f for the total rental cost of a vacuum cleaner for x hours
Using the points (1, 20) and (3, 32) from the table:
The flat fee that the store charges is $14
The reasonable domain is 1 ≤ x ≤ 12
The cost for 7 hours is:
f(7) = 6(7) + 14 = 46
Find out more on linear equation at: brainly.com/question/14323743
Implicit defferentation
remember that dy/dx y= dy/dx
so
take derivitive of both sides
solve for
minus 2x both sides
divide both sides by 2y
when is the slope equal to
solve for
find where the circle and this line intersects
substitute
for y
times both sides by
sqrt both sides, take positive and negative roots
x=+/-10
sub back
the points are (10,-24) and (-10,24)
remember that dy/dx y= dy/dx
so
take derivitive of both sides
solve for
minus 2x both sides
divide both sides by 2y
when is the slope equal to
solve for
find where the circle and this line intersects
substitute
times both sides by
sqrt both sides, take positive and negative roots
x=+/-10
sub back
the points are (10,-24) and (-10,24)