Answer:
81
Step-by-step explanation:
x^2 - 18x + _______
to find the blank
take (b/2) ^2
where b is the coefficient on the x term
(-18/2) ^2
9^2
81
add 81
Answer:
whts the question 86
Step-by-step explanation:
i dk
Answer:
1/4 of a mile in 1/10 of an hour
you can set up a proportion
(1/4)/(1/10)=2/H
you can now simplify or cross multiply
simplifying the left side
(1/4) divided by (1/10) equals (1/4) times (10/1)
(1/4)*(10/1)=10/4=5/2
5/2=2/H
cross multiply
5H=2*2
5H=4
H=4/5 of an hour or (4/5)*60=48 minutes
another solution...
2/(1/4)=8 and 8*(1/10)=8/10=4/5 of an hour or 48 minutes again
Sorry, I'm no help because I have no idea how to do those!
