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ikadub [295]
3 years ago
12

A cube. The top face has points A, G, E, F and the bottom face has points B, H, D, C. The diagonal from A to E is StartRoot 288

EndRoot inches and the diagonal from A to D is StartRoot 432 EndRoot inches.
What is the length of ED in the given cube? Round to the nearest tenth of an inch if necessary.

in.

Mathematics
2 answers:
saveliy_v [14]3 years ago
8 0

Answer:

12 inches. <3

Step-by-step explanation:

arlik [135]3 years ago
6 0

Answer:

The answer to this question is 12 inches.

Step-by-step explanation:

This is because 288 + b^2 = 432. After further calculations you can conclude that b = 12.

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8 0
3 years ago
Find a quadratic polynomial the sum and product of whose zeroes are -8 and 12 respectively. Hence find the zeroes.
Olenka [21]

Step-by-step explanation:

We khow the sum and the product of the zeroes of this quadratic polynomial

Here is a trick :

when we khow the sum S and the product P ofvtwo numbers we can find them by solving :

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here S= -8 and P=12

so:

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Let Δ be the discrminant of this equation: a= 1 , b= 8 and c=12

Δ= 8²-4*12 =16

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verify:

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7 0
3 years ago
Can someone help me with this?
zvonat [6]
Sorry, don't have time to do them right now but I know who does!

http://www.wolframalpha.com/widgets/view.jsp?id=ae438682ce61743f90d4693c497621b7

Just plug in 2 at a time.
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