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xchloee
13.04.2020 •
Mathematics
Tamara says she used the GCF to factor the expression 21x + 56xy as 7(3x + 8xy). Is she correct? Explain.
A.
Yes; 7 is the GCF.
B.
No; 14 is the GCF.
C.
No; 7x is the GCF.
D.
No; 7xy is the GCF.
pls give work
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Ответ:
Now create a triangle by drawing a line horizontally from (a,b) to the circumference and another line prerpendicular to this line from the point (x,y) to make a right angled triangl.e
Applying the pythagoras theorem to this triangle gives
(x - a)^2 + (y - b)^2 = r^2 which is the standard form of equation of a circle.