Which angle is an x-intercept for the function y = cos(1/2x)
Answers
y = cos(1/2 x)
The x-intercept can be calculated by equating the function to zero and solving for x. So,
y = cos(1/2 x) = 0
1/2 x = arc cos 0
1/2 x = 90° +180°n
x =2 (90° +180°n)
x = 180° + 360°n
or converting to radians
x = (180° + 360° n)(π/180°)
x = π + 2π n
where n is any whole number
if n = 0
x = π
Therefore, the x-intercept is π or π+2π n
PLATO ANSWER: Pi (π)
Hope I helped, Have a great day!!!
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Answers
We'll get started on that as soon as you share the whole
table of other information that goes with that question.
-3x + 4 = -8
Answers
Subtract 4 from -8
then your left with -3x=-12
Divide -12 by -3
x=4
Please put me as a Brainlier
Answers
2.) 3x^2 + 10x = -3
Answers
Answer:
1) 
2) 
Step-by-step explanation:
1)
2)
Answers
Answer:
sum = 900
Step-by-step explanation:
The sum of all odd number can be solved using arithmetic progression formula.
Odd numbers are numbers that cannot be exactly divided by 2 .That means odd number have remainder when divide by 2.
The first odd number is 1
The second is 3
The sequence goes like this
1, 3, 5, 7, 9, 11, 13, 15, 17, 19 , 21 .................................59
a = 1
d = 2
where
a = first term
d = common difference
let us find the number of terms before finding the sum
nth term = a + (n - 1)d
59 = 1 + (n - 1)2
59 = 1 + 2n - 2
59 + 2 - 1 = 2n
60 = 2n
n = 60/2
n = 30
Sum = n/2(a+L)
where L = last term
sum = 30/2(1 + 59)
sum = 15(60)
sum = 900
An = 1 + 2(n-1) ; A1 = 1
sum to n terms
Sn = (An + A1)n/2 ;
An=59, n = 29
Answers
32 minutes------------------------3 people------------------4 walls
x--------------------------------------4 people------------------7 walls
The minutes and the people are variables inversely proportional , therefore, we multiply in parallel
32 minutes*3 people=x*4 people
The minutes and the walls are variables directly proportinal; therefore, we multiply cross.
32 minutes*7 walls=x*4 walls
Therefore:
32 minutes*3 people*7 walls=x*4 people*4 walls
x=(32 minutes*3 people*7 walls) / (4 people* 4 walls)
x=42 minutes.
Answer: the time will be 42 minutes.
Answer:
42
Step-by-step explanation:
that is the answer on khan academy
hope that helped!
a thanks would be appreciated! ;)