Answer:
the mean is 65
Step-by-step explanation:
Answer:
Simplified - 2x(-x+4), Solution - -2x(-x+4)
From eq1 ,
2x = 13-3y
x = 6.5-1.5y (eq 3)
sub eq 3 into eq2,
4(6.5-1.5y)-y=-2
26-6y-y=-2
-6y-y=-2-26
-7y=-28
7y=28
y=4 ( eq 4 )
sub eq4 into eq3 ,
x=6.5-1.5(4)
x=6.5-6
x=0.5
Answer:
9 ft and 9 inches
Step-by-step explanation:
there are 12 inches in a foot
1ft = 12in
2ft = 24 in
3ft = 36 in
4ft = 48
and so on
9 ft = 108 inches which is the closes to 117.
So we have 9 ft
subtract 117 from 108, which is 9 inches left over
(x+6)^(1/2)-5=x+1
(x+6)^(1/2)=x+6
((x+6)^(1/2))^2=(x+6)^2
x+6=x^2+12x+36
0=x^2+11x+30
(-11+(11^2-4(1)(30))^(1/2))/2
(-11+((1)^(1/2))/2
(-11+1)/2=-5
(-11-1)/2=-6
((-6)+6)^1/2-5=(-6)+1
(0^(1/2))-5=-5
-6 is non-extraneous
((-5)+6)^1/2-5=(-5)+1
(1^1/2)-5=-4
1-5=-4
-4=-4
-5 is non-extraneous
