<span> When area is equal 1120. We can write an equation
(x+4)(-x+64)=1120
-x²-4x+64x+256=1120
-x²+60x+256-1120=0
-x²+60x-864=0
D=b² - 4ac= 3600-4*864=144, √D=12
x= (-b+/-√D)/2a
x=(-60+/-12)/(-2)
x=24, x=36
For x=24
(x+4)=24+4=28
(-x+64)=(-24+64)=40
For x=36
(x+4)=36+4=40
(x-64) =(-36+64)=28
So sides should be 28 and 40 in.
We did not get any extraneous solutions. They could be if we get negative length side, for example. They can come because a quadratic equation can
give positive and negative numbers because a^2 and (-a)^2 give the same positive number.
We chose to solve this equation using formula for quadratic equations, because this equation has too big numbers to solve it using other methods.
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<em>Let X and Y two nonempty sets. ... The variable x is called the independent variable (also sometimes called the argument of the function), and the variable y is called dependent variable (also sometimes called the image of the function.)</em>
<em>please</em><em> mark</em><em> me</em><em> brainliest</em>
Hello,
The answer is <u>3x² - x - 2</u>
<h3>Step-by-step explanation:-</h3>
<u>Step 1</u> : Apply distributive property by multiplying each term of " x - 1 " by each term of 3x + 2 :-
→ 3x² + 2x - 3x - 2
<u>Step 2</u> : Combine 2x and -3x to get -x :-
→ <u>3x² - x - 2</u>
✍️ <em>B</em><em>y</em><em> </em><em>Benjemin</em> ☺️
<h3>ANSWER</h3>
first is the geometric series
<h3 /><h3>EXPLANATION</h3>
a geometric series is a sequence of numbers whose first term is non zero and each of the succeeding terms is equal to the Prcedding term multiply by a constant number.
if a = first term
and constant number = d
then
GP is given by
a,a r , a r^2 ,a r^3 .............and so on
in first
a = 1/2
and d = 1/2
and hence it is an GP