The total cost after tax to repair Kimber's cracked phone screen is represented by 0.04(30h) + 30h, where h represents the numbe
1 answer:
we are given
The total cost after tax to repair Kimber's cracked phone screen is represented by 0.04(30h) + 30h
where
h represents the number of hours it takes to repair kimber's phone
so,
we know that
tax will always be some percentage of the entire cost
Here , we have 0.04(30h) ...which means 0.04 of 30h
and 30h is already given
so, 0.04(30h) is 4% of 30h
so, this term must be tax
the expression represents the amount of tax she must pay is 0.04(30h).......Answer
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Complete Question: Which of the following is an example of the difference of two squares?
A x² − 9
B x³ − 9
C (x + 9)²
D (x − 9)²
Answer:
A. .
Step-by-step explanation:
An easy way to spot an expression that is a difference of two squares is to note that the first term and the second term in the expression are both perfect squares. Both terms usually have the negative sign between them.
Thus, difference of two squares takes the following form: .
a² and b² are perfect squares. Expanding will give us
.
Therefore, an example of the difference of two squares, from the given options, is .
can be factorised as
.