Answer:
I think the second one
Step-by-step explanation:
I haven't learned how to do this.
The simplified answer is -2x-1 :)
The answer is (rounded to the nearest tenth) about 5.7 and since neither 18 or 2 have a perfect square, so this is irrational.
<span>We simplify the equation to the form, which is simple to understand
<span>7x-1/2(8x+4)=6
</span></span><span>Simplifying:
<span>7x-0.5*(8x+4)=6
</span></span><span>Reorder the terms
<span>7x+(-4x-2)=6
</span></span><span>Remove unnecessary parentheses
<span>+7x-4x-2=+6
</span></span><span>We move all terms containing x to the left and all other terms to the right.
<span>+7x-4x=+6+2
We simplify left and right side of the equation.
<span>+3x=+8
We divide both sides of the equation by 3 to get x.
<span>x=2.66666666667</span></span></span></span>
Answer:
C-(7)
Step-by-step explanation:
Given figure is a trapezoid and 21 - x is the mid segment.
Therefore by mid-segment formula of a trapezoid, we have:
21 - x = 1/2(17 + 11)
21 - x = 1/2 * 28
21 - x = 14
21 - 14 = x
7 = x
x = 7
