Answer:
(0,1)
Step-by-step explanation:
the answer is (0,1)
The formula is 
What are series?
In mathematics, we can describe a series as adding infinitely many numbers or quantities to a given starting number or amount.
We will find the formula as shown as below:
Let 
We know 



.
.

On adding










Hence, the formula is 
Learn more about Series here:
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The answer is:
Solve for y in the first equation
y=−5<span>
y=8−<span>x
</span></span>
<span>Replace all occurrences of y with the solution found by solving the last equation for y. In this case, the value substituted is <span>−5</span></span><span>y=−5</span><span><span>(−5)</span>=8−<span>x
</span></span>
Remove parentheses.<span>y=−5</span><span>−5=8−<span>x
</span></span>
Solve for x in the second equation.<span>y=−5</span>
<span>x=13</span>
The answer is <span>(13,−5<span>) Please mark as Brainliest
</span></span>
Answer:
81
Step-by-step explanation:
So first find the are of the rectangle: 9 * 15 = 135
Next find the area of the trapezoid.

135 - 54 = 81