Will i get brainliest if i answer?
Here is same thing but different numbers
<span><span>12 in2 = · 3 in</span><span>Since 4 · 3 = 12, we get (4 in) · (3 in) = 12 in2. So must equal 4 in.</span><span> = 4 in
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Hi,
Let assume a the width and b the length of the rectangular area.
As we know,

now, let's plug the given values to find a² + b²
Answer:
The sum of the roots is 0.5
Step-by-step explanation:
<u><em>The correct question is</em></u>
What is the sum of the roots of 20x^2-10x-30
we know that
In a quadratic equation of the form
The sum of the roots is equal to
in this problem we have
so

substitute
<u><em>Verify</em></u>
Find the roots of the quadratic equation
The formula to solve a quadratic equation is equal to


substitute





The roots are x=-1 and x=1.5
The sum of the roots are
----> is ok
Step-by-step explanation:
Total surface area of cuboid= 2(lb+bh+hl)
= 298ft²=2(28+4x+7x)
= 149=28+11x
= 121=11x
= 11=x