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SCORPION-xisa [38]
3 years ago
11

Need help please on geometry

Mathematics
2 answers:
Nikitich [7]3 years ago
6 0
Area of a polygon = # sides * side^2 / 4 * tan (180 / # sides)Area of a polygon = 5 * 8^2 / 4 * tan (36)Area of a polygon =320 / 4* 0.72654Area of a polygon =320 / <span> <span> <span> 2.90616 </span> </span> </span> Area= <span> <span> <span> 110.1109367688
</span></span></span>
The middle answer is correct.
<span><span> </span> </span> Source:http://www.1728.org/polygon.htm


ELEN [110]3 years ago
5 0
40 square units i think

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Building a is 190 feet shorter than building
MaRussiya [10]
We will solve this using a system of equations.  The first part tells us that building a is 190 feet shorter than building b.  Our first equation, then, is b=190+a.  The second part tells us that the addition of the two buildings' heights is 1480.  So our second equation is a + b = 1480.  The first equation is already solved for b, so let's sub that value into the second equation for b: a+(190+a)=1480.  2a + 190 = 1480 and 2a = 1290.  That means that building a is 645 feet tall.  Building b is 190 feet taller, so b = 190 + 645, which is 835.
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3 years ago
...........I need help......
ASHA 777 [7]

The anwer is B, f(x)=9500-750x

Hope this helps, brianliest if you can!

5 0
3 years ago
Any help at all would be deeply appreciated. i am DESPERATE
Lana71 [14]
The answers are C and D.
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3 years ago
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lions [1.4K]
Your answer is D. Hope this helps!


6 0
3 years ago
0.2(x+50)-6=0.4(3x+20)<br><br> ( show work please)
garri49 [273]
Let's solve your equation step-by-step.<span><span><span>0.2<span>(<span>x+50</span>)</span></span>−6</span>=<span>0.4<span>(<span><span>3x</span>+20</span>)</span></span></span>Step 1: Simplify both sides of the equation.<span><span><span>0.2<span>(<span>x+50</span>)</span></span>−6</span>=<span>0.4<span>(<span><span>3x</span>+20</span>)</span></span></span><span><span><span><span><span><span>(0.2)</span><span>(x)</span></span>+<span><span>(0.2)</span><span>(50)</span></span></span>+</span>−6</span>=<span><span><span>(0.4)</span><span>(<span>3x</span>)</span></span>+<span><span>(0.4)</span><span>(20)</span></span></span></span>(Distribute)<span><span><span><span><span>0.2x</span>+10</span>+</span>−6</span>=<span><span>1.2x</span>+8</span></span><span><span><span>(<span>0.2x</span>)</span>+<span>(<span>10+<span>−6</span></span>)</span></span>=<span><span>1.2x</span>+8</span></span>(Combine Like Terms)<span><span><span>0.2x</span>+4</span>=<span><span>1.2x</span>+8</span></span><span><span><span>0.2x</span>+4</span>=<span><span>1.2x</span>+8</span></span>Step 2: Subtract 1.2x from both sides.<span><span><span><span>0.2x</span>+4</span>−<span>1.2x</span></span>=<span><span><span>1.2x</span>+8</span>−<span>1.2x</span></span></span><span><span><span>−<span>1x</span></span>+4</span>=8</span>Step 3: Subtract 4 from both sides.<span><span><span><span>−<span>1x</span></span>+4</span>−4</span>=<span>8−4</span></span><span><span>−<span>1x</span></span>=4</span>Step 4: Divide both sides by -1.<span><span><span>−<span>1x</span></span><span>−1</span></span>=<span>4<span>−1</span></span></span><span>x=<span>−4</span></span>Answer:<span>x=<span>−<span>4</span></span></span>
7 0
3 years ago
Read 2 more answers
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