Answer:
x = pi/2 + 2 pi n x = pi + 2 pi n where n is an integer
x = 5pi /3 + 2 pi n
Step-by-step explanation:
8 cos^2 x + 4 cos x-4 = 0
Divide by 4
2 cos^2 x + cos x-1 = 0
Let u = cos x
2 u^2 +u -1 =0
Factor
(2u -1) ( u+1) = 0
Using the zero product property
2u-1 =0 u+1 =0
u = 1/2 u = -1
Substitute cosx for u
cos x = 1/2 cos x = -1
Take the inverse cos on each side
cos ^-1(cos x) = cos ^-1(1/2) cos ^-1( cos x) =cos ^-1( -1)
x = pi/2 + 2 pi n x = pi + 2 pi n where n is an integer
x = 5pi /3 + 2 pi n
25 - (3*3) - (3*5)
25 - 9 - 15
=1
Yes it is enough, and will have balance of 1g
Answer:
cone , cylinder and sphere
Step-by-step explanation:
these 3 solids {cone , cylinder , sphere} their cross sections are sometimes a circle.
Answer:
A, B, C, D, and F
Step-by-step explanation:
Replace x with the number options (remember to multiply the options by a negative one since x is negative).
3*-1=-3 -3 is greater than or equal to -4
-3*-1=3 3 is greater than or equal to -4
4*-1=-4 -4 is greater than or equal to -4
-4*-1=4 4 is greater than or equal to -4
4.001*-1=-4.001 -4.001 is not greater than or equal to -4, so this does not work
-4.001*-1=4.001 4.001 is greater than or equal to -4
Hope this helps!
Answer:
3 - x = 25
Step-by-step explanation:
the words "less than" means to subtract, and the word "is" means equal so now we know that we can make an equation, 3 - x = 25
