Answer:
x = -pi/2
Step-by-step explanation:
hello :
f(x)=sin x x⋲(-2pi,0)
the derivate for f is : f'(x) = cosx
f(x) achieve a minimum when : f'(x) =0
cosx = 0 genral solution is :
x = pi/2 +kpi .. k in Z
but : x⋲(-2pi,0) so : x = -pi/2.....(k = -1)
Since the numbers are together you have to multiply so it would be: 4x3=12x2=24+3=27. I'm pretty sure of that
Equation of a circle:
(x - h)^2 + (y - k)^2 = r^2
In this case:
<span>center (2,7) and radius 4 so h = 2, k = 7 and r = 4
</span>Equation:
(x - 2)^2 + (y - 7)^2 = 4^2
(x - 2)^2 + (y - 7)^2 = 16
Hope it helps.
Answer:
19y - 9
Step-by-step explanation:
We can use the acronym PEMDAS. First, we need to calculate -3(-4y+3) by distributing. This is -3 * (-4y) + (-3) * 3 = 12y - 9 so the expression becomes 12y - 9 + 7y. Next, we need to combine like terms. 12y and +7y are like terms since they both have y so combining them gives us 12y + 7y = 19y. -9 stays by itself since there are no other constants so the final answer is 19y - 9.
