9. -6xy+2xz
10. b(a-c-3d)
11. -3xy+xz-4xw
also i think that 8 is supposed to be a(10-13)
Answer:
56 is the answer so it's A, C and E.
Step-by-step explanation:
<h3>
Answer: D) 95</h3>
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Explanation:
First, let's calculate angle BYC. This is the angle formed by the chords that subtend the arcs mentioned. This angle faces or is aimed toward the direction of the arcs. To find this angle, we'll average the arc measures like so:
angle BYC = (arcAD + arcBC)/2
angle BYC = (50+120)/2
angle BYC = 170/2
angle BYC = 85 degrees
Then we'll use the idea that angles BYC and DYC are supplementary (aka they form a straight 180 degree angle)
angleBYC + angleDYC = 180
angleDYC = 180 - angleBYC
angleDYC = 180 - 85
angleDYC = 95 degrees
which is why the answer is choice D.
1: the square root of 1 is one.
4: the square root of 4 is 2.
9: the square root of 9 is 3.
25: the square root of 25 is 5.
36: the square root of 36 is 6.
81: the square root of 81 is 9.
144: the square root of 144 is 12.
225: the square of 225 is 15.
400: the square root of 400 is 20.
