Let's plug x= -1, y= 4 in the inequation, we have:
4< 2*(-1)+5
⇒ 4< -2+5
⇒ 4< 3 (false)
Therefore, (-1,4) is not a solution of the inequation y<2x+5~
They are a method for showing the frequency of a data plot in a much more compact and numerical way.
1[2 3
2[1 7
3[3 4 5 7
4[ 0 0 1
Key 1[2= 12
meaning that 3[5 is 35 and 4[0 is 40 and so and so forth
A tangent contains no chords
When you multiply 10, move the decimal point to the right one place value
3.14 x 10 = 31.4
31.4 is your answer
hope this helps
For this you need to use the reverse cosine function
Cos^-1 (.25)
75.6
