What substitution should be used to rewrite 4x^4-21x^2+20 =0 as a quadratic equation
1 answer:
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Answer:
y = 8
Step-by-step explanation:
y= + 6
= -6
y=( x 6) + 6
y= 2+6 = 8
Solution:
we are given that
Both circle Q and circle R have a central angle measuring 140°. The area of circle Q's sector is 25π m^2, and the area of circle R's sector is 49π m^2.
we have been asked to find the ratio of the radius of circle Q to the radius of circle R?
As we know that
Area of the sector is directly proportional to square of radius. So we can write