19/2 = 9.5
(9.5)^2 = 90.25 = 9 + 81.25
x^2 - 19x + 9 = 0
x^2 - 19x + 90.25 - 81.25 = 0
(x - 9.5)^2 = 81.25
x - 9.5 = +/-sr(81.25)
I will let you finish from here
Answer:
130
Step-by-step explanation:
M+f=35
f=5+m^2
sub 5+m^2 for f
m+5+m^2=35
m^2+m+5=35
minus 35 both sides
m^2+m-30=0
factor
what 2 numbers mulitply to get -30 and add to get 1
-5 and 6
(m-5)(m+6)=0
set to zto
m-5=0
m=5
m+6=0
m=-6
age can't be negative
max is 5
father is 30
When dividing by a fraction, it is the same as multiplying by the inverse of the fraction.
<span>20 divided by 1/7 = 20 * 7/1 = 140 </span>
<span>Check with the other problems.</span>
I think it’s C i think is right
