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Natasha_Volkova [10]
3 years ago
6

I need help with this as well

Mathematics
1 answer:
cupoosta [38]3 years ago
4 0
<span>n 19 -----------> AB/AC=(4/6)=2/3<span>

n 20 ------------> BC/CD=[AC-AB]/[AD-AC]=(6-4)/(9-6)=2/3

n 21-------------> BD/AE=[AD-AB]/[AE]=(9-4)/(12)=5/12

n 22   7 and 28  find the geometric mean of the two number
step 1
Multiply the two numbers together: 
28*7=196 
step 2
take the square root: 
<span><span>sqrt(196)=14 
</span>the answer is 14</span>

n 23  Simplify the ratio 10 ft/30 in---> divided between 2 both members
5 ft/15 in-----> divided between 5 both members ---> 1 ft/3 in</span><span>

n 24 
<span>if AB=4 -------></span></span> AB~FG
</span><span>FG=8<span>
then
</span></span>AB*factor=FG-------- > 4*factor=8-- > factor=8/4=2
the figure ABCDE is half of the figure FGHJK
then<span>
BC=4
AE=CD=5
and 
ED=6
therefore
<span>the perimeter=[4+4+5+5+6]=24 units</span></span>
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