Step-by-step explanation:
Use the formula D2 = X^2 + Y^2 to find the squared distance between two points. If the two points have coordinates (-3, 7) and (1, 2), then the difference between 7 and 2 is 5, and so Y = 5. For example, if X = 4 and Y = 5, then D2 = 42 + 52 = 41. Thus, the square of the distance between the coordinates is 41.
y^2 means (y) x (y)
Answer:
Apply the sine theorem in triangle ABC:
sin C = AB/AC = 4/5
=> C = arcsin(4/5) = 53.13 deg
As shown in picture, AB//CD. Using the same side interior angles theorem:
=> angle BCD = angle ABC = 90 deg
=> angle ACD = 90 - angle ACB = 90 - C = 90 - 53.13 = 36.87 deg
Apply the cosine theorem in triangle ACD:
cos C = AC/CD
=> CD = AC/cos C = 5/cos(36.87) = 5/0.8 = 6.25
=> Option C is correct
Hope this helps!
:)
Answer:
3:1
Step-by-step explanation:
75 and 25 can both be divided by 25
X=-5 plug in and solve
6 (-5)+100
-30+100= 70
Answer:
The answer would be e. 0.50
Step-by-step explanation: