Answer:
Option B is correct answer.
Step-by-step explanation:
We need to solve the expression sec2xcot2x.
We know sec x = 1/ cos x and cot x = 1/ tan x and tan x = sin x/cos x and 1/tanx = cosx /sinx
Since in question we 2x instead of x so, replacing x with 2x and Putting values:
So, Option B is correct answer.
Step-by-step explanation:
Down 2 units : we will move the point 2 units to the down direction of the vertical line (y-axis)
which means (x ,y-2) = (-2,1)
right 3 units = we will move the point 3 units to the right direction of the horizontal line (x axis )
(x+3,y)= (1,3)
up 1 unit and left 4 units : we will move the point 1 unit in the up direction of the vertical line (y-axis)
and move it 4 units in the left direction of the horizontal line (x axis )
(x-4,y+1l. = (-6,4)
So with this type of question, you are expected to solve the systems of equations simultaneously
Let 4x + 4y = -12 ..... (1)
3x - 4y = -23 ..... (2)
By summing (2) and (1)
⇒ 4x + 3x + 4y + (-4y) = -12 + (-23)
7x = -35
⇒ 7x ÷ 7 = -35 ÷ 7
⇒ x = - 5
By substituting x into (1)
If 4x + 4y = -12 ..... (1)
then 4 (-5) + 4y = -12
⇒ 4y = -12 + 20
⇒ y = 8 ÷ 4
⇒ y = 2
∴ the solution for the system of equation are x = - 5 ; y = 2
Answer:
12 people
Step-by-step explanation:
There were 40 last year. 30% more would be:
30%*40 = 12
Therefore, this year, there were 12 more people.
I think this is the awnser (-2,-3)