Suppose that y varies directly with x and at the same time varies inversely with z and y=12 when x=6 and z=-2. Write the equatio
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Answer:
x = 4
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 1² = 9²
x² + 1 = 81 ( subtract 1 from both sides )
x² = 80 ( take square root of both sides )
x = =
=
×
= 4
$612.04 will Jack have to pay if he drives 1,248 miles in one particular month .
<u>Step-by-step explanation:</u>
Here we have , Jack’s new truck costs $325 per month for car payments. In addition, he estimates that gas and maintenance expenses cost $0.23 per mile. We need to find :
a. Express the monthly cost as a function of the miles driven.
Let number of miles driven be x , & monthly cost be y So , equation is :
⇒ , Where 325 is
Jack’s new truck costs $325 per month for car payments .
b. How much will Jack have to pay if he drives 1,248 miles in one particular month?
According to question we have ,
Putting value of x in we get:
⇒
⇒
⇒
⇒
Therefore , $612.04 will Jack have to pay if he drives 1,248 miles in one particular month .