Answer:
just use the pie sign in your calculator
Answer:
here are ur answers
Step-by-step explanation:
Answer:
He has to use the foil method to combine the terms. But before that it would be best if he got rid of the negative exponents by taking the inverse of the number which moves the negative exponent to the denominator making it positive and leaving a 1 in the numerator.
Step-by-step explanation:
3x-4y+2z=20
x+y-z=-4
6x-y+2z=23
x=2
y=-1
z=5
This is a 90-60-30 triangle so the angle is 30 degrees.