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Scrat [10]
3 years ago
5

Need answers ASAP

Mathematics
1 answer:
timofeeve [1]3 years ago
4 0
Only figure C is a regular polygon since it has all sides congruent and all angles congruent. 
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Rewrite sin^2 2xcos ^2 2x as an expression in terms of the first power of cosine
zavuch27 [327]

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Step-by-step explanation:

use the formula { a couple of times} cos 2 Θ = 2 cos ² Θ - 1 = 1 - 2 sin ² Θ....your answer will likely have a cos  2x , a cos 4x , and a cos 6x in it.....note : cos ² Θ - sin ²Φ = cos ( Θ + Φ) cos (Θ - Φ) will also be needed for appropriate choices of Θ & Φ in terms of x

8 0
2 years ago
Y'all don't make fun of me or anything my brains not working but this is a real question a triangle is 3 sides and a square has
Xelga [282]

Answer:

Lol, you're correct no worries!

Step-by-step explanation:

Yes a triangle has 3 sides and a square has 4 sides :)

3 0
3 years ago
At what point do the lines y = x + 7 and y = 5x - 13 intersect?​
borishaifa [10]
(x,y)
(3.5,10.5) this is where they meet
6 0
3 years ago
If one-half of a number decreased by 20 is 40, what is the number?
Anvisha [2.4K]

Answer:

120

Step-by-step explanation:

Just add the 20 back to 40 and times by 2

40 + 20 = 60

60 * 2 = 120

8 0
2 years ago
Read 2 more answers
Help me please i am marking brainiest, no one ever helps me with anything i am really struggling as a kid to move on to the next
ExtremeBDS [4]
So assuming that the book is 100% the student has read 45% of the book so far in a time of 37 minutes so if you divide 45 by 37 you get 1 minute and 22 seconds per 1% of the assignment
If you multiply this by 100% you get 122 minutes for the total assignment
7 0
3 years ago
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