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RideAnS [48]
4 years ago
5

What is the difference between formal and informal geometry

Mathematics
1 answer:
shutvik [7]4 years ago
7 0

Answer:

There is a sub-field of geometry called formal geometry which is related to algebraic geometry and deals with topics such as formal schemes , topological rings , the comparison theorem in algebraic geometry , the Grothendieck existence theorem.

Informal geometry have the topics of definitions, measurements, and constructions of geometric shapes and figures. No attention to formal proofs is given. Subtopics include points, lines, angles, triangles, quadrilaterals, circles, area, and perimeter.

Step-by-step explanation:

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A phone company charges $25.00 flat fee per month plus an additional $0.15 per text. If your bill was $34.00, approximately how
SpyIntel [72]

Answer:

60 text

Step-by-step explanation:

Let the number of text sent be x.

Given:

Fee charged per month = $ 25.00

Fee charged per text = $ 0.15

Therefore, fee charge for x text = 0.15\times x=0.15x.

Total cost for a given month = 25+0.15x.

Now, if for a given month, the total cost is $ 34. Then,

25+0.15x=34\\ 0.15x=34-25\\0.15x=9\\x=\frac{9}{0.15}=60

Therefore, the number of text sent for a monthly bill of $ 34 is 60.

8 0
3 years ago
Is this correct???????
Igoryamba

Yes the answer A is the correct inequality. Lmk if you want more detail.

4 0
3 years ago
Can someone help me and show work please??
OLga [1]

Answer:2

Step-by-step explanation:

It can't be 1 because -4 < or equal to 2-6 is still less than or equal to 8 and it has to be 2 since -4 < or equal to 2-12 is not a correct statement even though it is less than or equal to 8 and it isn't -1 or 0 either

3 0
4 years ago
I need help ........... here’s a picture of the question
cricket20 [7]

Answer:

The answer is B. m∠ POS + m∠ POR = 180

step-by-step explanation:

Because if you already know that m∠POQ equals 90 because it is a right angle

Then all you have to do is take 90 from 180 which is 90 then divide 90 by two which is 45

now you have the measurement for the two acute angles 45

which makes m∠POS = 45 and m∠QOR =45

NOW YOU HAVE TO ADD 90 AND  45 AND 45 ALL TOGETHER THEN YOU WILL HAVE 180

4 0
4 years ago
There are 65 children in the sixth grade. If the boys and girls are in the ratio of 8:5, what equation should be used to find th
AveGali [126]

Answer:

8x+ 5y= 65

8x+ 5x= 65

Step-by-step explanation:

we ca take same x,y

6 0
3 years ago
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