A: no
X = 3
2x + 3
2(3) + 3
6 + 3
9
For the other one:
2(x + 3)
2(3+3)
2(6)
12
2x + 3 and 2(x + 3) are not equivalent because one has parentheses, which means you will have to do parentheses first instead of multiplication (PEMDAS rule)
Hope this helps!
im not sure but maybe look up how to calculate volume of a cone.. then go from there :D
Answer:
43°
Step-by-step explanation:
The angle of a straight line is 180°, 62° and 75° of the angle is taken so what is remaining is the angle for BEC.
180-(62+75)
180-137
43°
15 is 60 percent of 25. 15x100/60 and it should be 25.
Answer:
d. (3, 7, -3)
Step-by-step explanation:
The reduced row-echelon form of the augmented matrix has 1s on the diagonal and zeros off-diagonal, except for the answer in the last column. It can be convenient to start by writing the augmented matrix using the second equation first:
The method may not be strictly according to some algorithm, but it avoids fractions and gives the correct result: (x, y, z) = (3, 7, -3).