Answer:
No this is not the same as cos(2Ф)
Step-by-step explanation:
First I changed the 
Ф into 1-
Ф
I then foiled the (1-2Ф)(1-Ф) and that resulted in 1-Ф-2Ф+2
Ф
From there, I then cancelled the two 2Ф and combined like terms and was left with 1-3Ф
Now 1-3Ф ≠ cos(2Ф)
Remark
If the lines are parallel, there are no solutions to the system of equations. Start with the equation you know the most about.
x + 6y = 7 Subtract x from both sides
x - x + 6y = 7 - x Combine
6y = - x + 7 Switch and divide by 6
y = -x / 6 + 7/6
The general equation for a line is y = mx + b where m is the slope of the line.
m = - 1/6
================
Now look at the second equation
10ay - 5x = 32 Add 5x to both sides
10ay = 5x + 32 Divide by 10a
y = (5/10a)x + 32/(10a)
===============
Now you must make
5/10a = - 1/6 Cross Multiply
5* 6 = - 10a * 1
30 = - 10a Divide by - 10
a = 30 / - 10
a = - 3
So these two equations will have no solution when a = - 3
Answer:
(-0.3)^4 = 0.0081
Step-by-step explanation:
Answer:
4.2
Step-by-step explanation:
took a bullet for the team
Step-by-step explanation:
a)42
b) triangle and Parallelogram
c) for triangle: (base× height)÷2
for Parallelogram: (base×height)
d) triangle: (6×6)÷2=18
Parallelogram: 6×4=24
18+24=42
if it is unclear or you need more explanation, ask freely. if the answer is correct please give me brainliest i need 3 brainliests
