Answer:
Step-by-step explanation:
common difference=3
-54/-18=3
-18/-6=3
-1296 = -2(3)^5-1
-7776 = -2(3)^6-1
-46656 = -2(3)^7-1
ans. = first term (difference)^n-1
$4.50
To find this, take the total amount and subtract it from the given amount he spends:
18 - 9 = 9
With this information, you know you need to get two of the same birthday cards with the left over money, meaning you need to split the final answer in half. So, 9 divided by 2 is 4.50.
Hope this helps!
Answer:
perpendicular
Step-by-step explanation:
because the opp of 3 is 
<3
Red
Answer:

Step-by-step explanation:
Basically when a variable with a negative exponent, such as
, you just take the reciprocal of it and then change the exponent sign, or in simple terms flip it. The reciprocal of a^{-2} and changing the exponent sign is is
.
To demonstrate let’s solve the first problem:

Using what we just learned, we take the reciprocal and flip the sign of
and
, which are
and
respectively.
Therefore the equation is now:

To simplify we add the exponents (only if they have the same base, or the same variable, in this case)
Therefore our answer is:
