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gizmo_the_mogwai [7]
4 years ago
7

Which information is sufficient to prove that quadrilateral ABCD is a parallelogram? A)∠A≡∠C. B) AB=CD. C)∠A and ∠C are suppleme

ntary. D) the diagonals bisect each other.
Mathematics
1 answer:
r-ruslan [8.4K]4 years ago
6 0
The one bit of information that is sufficient is ...
  D) the diagonals bisect each other.

_____
While selections A and B are necessary, they are not sufficient. Choice C is not applicable to a parallelogram.
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I need to know about geometry.
soldier1979 [14.2K]
If you want to know about geometry, the best thing to know would probably what it is. Geometry is a branch of mathematics that deals with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs. 
6 0
4 years ago
PLZZZ HELP DUE BY MIDNIGHT
trapecia [35]

Answer: (i) 4x - 40 = 76

(ii) 29 questions

Step-by-step explanation:

Let the total number of questions be x.

Since he received 4 points for every correct answer and he got 10 answers wrong , this means he lost 40 points , the equation thus become

4x - 40 = 76

To find the value of x , add 40 to both sides

4x = 116

divide through by 4

x = 29

Therefore , there are 29  questions on his math test

4 0
4 years ago
Mrs. Pate’s class all got A’s on their math test, so she bought chocolate bars as a reward the next day. During the night,howeve
Galina-37 [17]
4 students:3 bars=3/4 bar per person
3/4 bar x 4 students=3 whole bars
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5 0
4 years ago
Cosx=4/5 what is sin2x cos2x and tan2x
earnstyle [38]

Answer:

-24/5

Step-by-step explanation:

The solution to the problem is as follows:

cscx < 0 means 1/sinx < 0, or sinx < 0.  

sinx = -3/5 because you're dealing with a 3-4-5 triangle, and we established

sinx is negative.  

sin2x = 2sinxcosx = 2*-3/5*4/5 = -24/25  

cos(2x) = cos^2(x) - sin^2(x) = 16/25 - 9/25 = 5/25 = 1/5  

tan2x = sin2x / cos2x = -24/5

4 0
3 years ago
Please help!
Sonbull [250]

Answer:

The slope is 4

Step-by-step explanation:

Everytime x goes up by 1, y goes up by 4.

4/1=1

4 0
3 years ago
Read 2 more answers
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