From the third equation 2z=-2x+4
z=-x+2
plug into the second equation -4+4y+5(-x+2)=7
-4+4y-5x+10=7
4y-5x=1
y=5/4x+1/4
plug both of these into the first equation x+y+z=8
x+5/4x+1/4+(-x+2)=8
5/4x+2.25=8
5/4x=5.75
x=4.6
now plug back into the substitution equations.
z=-x+2= -4.6+2= -2.6
y=5/4x+1/4=5.75+1/4=6
the answer is (4.6, 6, -2.6)
A is the answer to your question
1. they found the mean,
3. mean=17.4
median, 15
mode= 25
Answer:
f(x)= x2 - 2x + 3
0=3
x = ¤
Step-by-step explanation:
f(x) = -2x +19
0=-2x +19
2x=19
x =19/2
x= 9,1/2
x=9,5
Answer: 221.56
Step-by-step explanation: (3.14)(r)^2
r = half diameter
