How long is the Katy trail on your table and then multiply by 6
Answer:
78,4 cm^2
Step-by-step explanation:
I did this in my head so i could be wrong but im pretty certain this is right
1.) set up the problem as if there were no decimals
4.) Multiply
2.) count the numbers behind the decimals in the problem
3.) count over that number of spaces from the right in your to place the decimal
Answer:
x=9
Step-by-step explanation:
2(x + 6) = 3(x + 1)
2x+12=3x+3
2x+12-12=3x+3-12
2x=3x-9
2x-3x=-9
-1x=-9
-1x÷-1=-9÷-1
x=9
Answer:
steps below
Step-by-step explanation:
Are you going to solve the value of A or just a proof the equation
cos 2A = cos² A - sin² A
2cos²A-cos2A-1 = 2cos²A - (cos² A - sin² A) - 1 = cos² A + sin² A - 1
2cos²A-cos2A-1 = 1 - 1 = 0
A: 90° or 270° or 450° .....