54 is 90% of: (N = number)
90% = 90/100 = .9
54=.9 x N
54/.9 = N
60 = N
Y²(y² + 19) + 3y - 5 + 8⁰
y²(y²) + y²(19) + 3y - 5 + 1
y⁴ + 19y² + 3y - 4
Answer:The answer is 77.
Step-by-step explanation:
But it's not in the options.
If the question is 62-15=47
X^2 + y^2 - x - 2*y = 0
To find both coordinates and radius we need to make this equation in circle form:
(x-a)^2 + (y-b)^2 = r^2
x^2 - 2*1/2*x + 1/4 - 1/4 + y^2 - 2*1*y + 1 - 1 = 0
Here we are adding and subtracting numbers in order to get square binomial.
(x - 1/2)^2 + (y-1)^2 = 5/4
coordinates of center are (1/2,1) and the radius is √