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IrinaK [193]
3 years ago
14

For what values of x and y must the figures below be a parallelogram? SOMEONE HELP PLEASE!!!

Mathematics
1 answer:
Klio2033 [76]3 years ago
5 0
I’m having trouble with questions like these too so i too need the answer idk
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[ANSWER ASAP PLEASE] Which point is a reflection of across the x-axis? A. point A B. point B C. point C D. point D E. point E​
Alex_Xolod [135]

Answer:

Point C

Step-by-step explanation:

We want to reflect across the x axis

That means the y coordinate changes sign

Z = ( 5 1/2 , 3)

Z' = ( 5 1/2 , -3)

That is point C

8 0
3 years ago
Please help me!!!!!!!!!!!
lbvjy [14]

Answer:I think its C but im not sure

6 0
3 years ago
The two cones below are similar. What is the value of x?
dimaraw [331]
The answer is 0.8! Hope this helped 
6 0
3 years ago
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Angles A and B are located in the first quadrant such that sinA= 7/25 and cosB = 5/13. Determine the exact value for cos (A-B).
fomenos

Answer:

  204/325

Step-by-step explanation:

You can work this a couple of ways. We expect you are probably expected to use trig identities.

  cos(A) = √(1 -sin²(A)) = 24/25

  sin(B) = √(1 -cos²(B)) = 12/13

cos(A -B) = cos(A)cos(B) +sin(A)sin(B) = (24/25)(5/13) +(7/25)(12/13)

  = (24·5 +7·12)/325

cos(A -B) = 204/325

__

The other way to work this is using inverse trig functions. It is necessary to carry the full calculator precision if you want an exact answer.

  cos(A -B) = cos(arcsin(7/25) -arccos(5/13)) = cos(16.2602° -67.3801°)

  = cos(-51.1199°) ≈ 0.62769230 . . . . (last 6 digits repeating)

The denominators of 25 and 13 suggest that the desired fraction will have a denominator of 25·13 = 325, so we can multiply this value by 325 to see what we get.

  325·cos(A-B) = 204

so, the exact value is ...

  cos(A -B) = 204/325

8 0
3 years ago
Please help me with this.
kramer

Answer:

c

Step-by-step explanation:

cause i am a math mttition

7 0
3 years ago
Read 2 more answers
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