Find the value of x in the equation below 4=x/5
2 answers:
Answer:
Step-by-step explanation:
How to find the value of in an equation?
To find the value of , or any other variable, use Addition, <em>Subtraction</em>, <em>Multiplication</em> or Division. The entire process of solving an equation really boils down to these four mathematical operations.
The first operation to be used in the equation is <em>Multiplication</em>. I am going to multiply
by both sides. I will end up with this as my result:
, or
.
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Answer:
a) where "
" stands for the number of miles driven.
b) He can drive as far as 250 miles to keep the rental cost limited to $140.
Step-by-step explanation:
a) Robert wants to make sure that the addition of the costs coming from the car rental per week ($91) plus the amount paid for the coverage of "x" number of miles (which goes as $0.14 times x) does not exceed $140 (which is the same as saying that this total cost must be smaller than or equal to $140.
In math terms, such is written as:
where "x" stands for the number of miles driven.
b) the total number of miles (x) he is allowed to cover given the $140 restriction is obtained by solving for "x" (the number of driven miles) in the inequality of part a):
which tells us that the number of driven miles (x) has to be smaller or equal to 350 miles. Then he can drive as far as 250 miles to keep the rental cost limited to $140.