Answer:
-21 3/5
Step-by-step explanation:
May i have brainliest
We have P = 3 x a (the formula of the perimeter); 26 = 3 x a ; we obtain a = 26/3;
Then, we have <span>the Pythagorean Theorem in one of two rectangular and congruent triangles :</span>
h² = a² - (a/2)² = a² - a²/4 = 4a²/4 - a²/4 =<span> 3a²/4</span>
It follows that
h = √(3a²/4) = a√3/2 ≈ 0,866*a ≈ 7,5 centimeter.
<span>−5</span>=<span>−<span>2/3x+3
-5=9x-2/3x
-15x=9x-2
</span></span><span><span><span>−<span>15x</span></span>−<span>9x</span></span>=<span><span><span>9x</span>−2</span>−<span>9x</span></span></span>(Subtract 9x from both sides)<span><span>−<span>24x</span></span>=<span>−<span>2
-24x/-24=-2/-24
x=1/12
:)</span></span></span>
