Step-by-step explanation:
x² + 2x - 63 = 0
(x+9)(x-7)=0
x=-9 x=7
Answer:
y= z-3x/4
Step-by-step explanation:
4y=z-3x
y=z-3x/4
Answer:
Step-by-step explanation:
Recall that we say that d | a if there exists an integer k for which a = dk. So, let d = gcd(a,b) and let x, y be integers. Let t = ax+by.
We know that 
so there exists integers k,m such that a = kd and b = md. Then,
. Recall that since k, x, m, y are integers, then (kx+my) is also an integer. This proves that d | t.
Answer:
X' = (-3 , -5)
Y' = (-1, -1)
Z' = (4, -8)
General rule: (x,y) = (y, -x)
I am 1 brainly away from the next rank, your help would be appreciated
Answer:
40
Step-by-step explanation:
here is a trig calculator
http://www.carbidedepot.com/formulas-trigright.asp
